HackageDB: packages by category

Packages by category

Categories: .NET (1), Acme (2), AI (6), Algebra (2), Algorithms (35), Animation (3), Backup (1), Bioinformatics (11), BSD (1), Classification (2), Clustering (2), Code Generation (4), Codec (36), Codecs (3), Combinators (4), Comonads (1), Compiler (8), Compilers/Interpreters (29), Composition (2), Concurrency (30), Concurrent (1), Configuration (1), Console (16), Control (83), Crosswords (1), Crypto (1), Cryptography (13), Data (241), Data Mining (4), Data Structures (32), Database (52), Datamining (2), DataStructures (1), Debug (9), Dependent Types (6), Desktop (6), Development (81), Distributed Computing (18), Distribution (28), Editor (6), Education (3), Error Handling (3), Failure (11), FFI (19), FFI Tools (2), Finance (2), Foreign (19), Foreign Binding (1), Formal Methods (1), FRP (18), Game (50), Generics (18), Gentoo (1), GHC (3), GIS Programs (1), Graphics (106), Graphs (3), GUI (24), Hardware (5), Help (1), Heuristics (1), IDE (2), Interfaces (5), Internet (1), Language (83), List (4), Math (67), Media (2), Middleware (2), Monadic Regions (4), Monads (33), Music (16), Natural Language Processing (14), Network (102), Network APIs (1), Number Theory (2), Numeric (2), Numerical (13), OAuth (1), Other (5), Parsing (35), Pattern Classification (1), Performance (1), Phantom Types (1), Physics (6), PL/SQL Tools (1), Profiling (5), Program Transformation (1), Protocol (1), Pugs (9), Reactivity (12), Reflection (3), RFC (1), Scientific Simulation (1), Screensaver (1), Scripting (1), Search (4), Security (2), Semantic Web (1), Sound (57), Source-tools (5), Statistics (1), Stochastic Control (1), System (145), System.Console (1), Template Haskell (2), Test (1), Testing (28), Text (133), Text.ParserCombinators Parsing Text (1), Theorem Provers (5), Trace (3), UI (1), User Interfaces (33), User-interface (1), Utility (1), Utils (15), Web (120), Workflow (1), XML (24), Unclassified (27).

.NET

hs-dotnet library: Pragmatic .NET interop for Haskell

Acme

acme-dont library: A don't construct
acme-now library: An interface to the philosophical and metaphysical "now"

AI

Dao program: An interactive knowledge base, natural language interpreter.
hfann library and program: Haskell binding to the FANN library
hgalib library: Haskell Genetic Algorithm Library
hnn library: A minimal Haskell Neural Network Library
hpylos program: AI of Pylos game with GLUT interface.
mines program: Minesweeper simulation using neural networks

Algebra

agum library and program: Unification and Matching in an Abelian Group
cmu library and program: Unification in a Commutative Monoid

Algorithms

binary-search library: Binary and exponential searches
Binpack library: Common bin-packing heuristics.
DecisionTree library: A very simple implementation of decision trees for discrete attributes.
Diff library: O(ND) diff algorithm in haskell.
dom-lt library: The Lengauer-Tarjan graph dominators algorithm.
edit-distance library and programs: Levenshtein and restricted Damerau-Levenshtein edit distances
funsat library and program: A modern DPLL-style SAT solver
garsia-wachs library: A Functional Implementation of the Garsia-Wachs Algorithm
Graphalyze library: Graph-Theoretic Analysis library.
GraphSCC library: Tarjan's algorithm for computing the strongly connected components of a graph.
hgal library: library for computation automorphism group and canonical labelling of a graph
hmm library: Hidden Markov Model algorithms
incremental-sat-solver library: Simple, Incremental SAT Solving as a Library
infinite-search library: Exhaustively searchable infinite sets.
iproute library: IP Routing Table
kmeans library: K-means clustering algorithm
ListTree library: Combinatoric search using ListT
markov-chain library: Markov Chains for generating random sequences with a user definable behaviour.
Munkres library: Munkres' assignment algorithm (hungarian method)
Numbers library: An assortment of number theoretic functions
NumberSieves library: Number Theoretic Sieves: primes, factorization, and Euler's Totient
palindromes library and program: Finding palindromes in strings
pqueue-mtl library: Fully encapsulated monad transformers with queuelike functionality.
presburger library: Cooper's decision procedure for Presburger arithmetic.
primes library: Efficient, purely functional generation of prime numbers
queuelike library: A library of queuelike data structures, both functional and stateful.
rangemin library: Linear range-min algorithms.
sat programs: CNF SATisfier
sat-micro-hs program: A minimal SAT solver
satchmo library: SAT encoding monad
satchmo-examples programs: examples that show how to use satchmo
satchmo-funsat library: funsat driver as backend for satchmo
teams library: Graphical modeling tools for sequential teams
TrieMap library: Automatic type inference of generalized tries.
union-find library: Efficient union and equivalence testing of sets.

Animation

cal3d library: Haskell binding to the Cal3D animation library.
cal3d-examples programs: Examples for the Cal3d animation library.
cal3d-opengl library: OpenGL rendering for the Cal3D animation library

Backup

multiplicity program: Wrapper program for duplicity, adding config files

Bioinformatics

bio library: A bioinformatics library
clustertools programs: Tools for manipulating sequence clusters
dephd program: Analyze quality of nucleotide sequences.
estreps programs: Repeats from ESTs
flower program: Analyze 454 flowgrams (.SFF files)
korfu program: The Korfu ORF Utility
rbr programs: Mask nucleotide (EST) sequences in Fasta format
simseq program: Simulate sequencing with different models for priming and errors
trimpolya program: Search for, annotate and trim poly-A tail
xml2x program: Convert BLAST output in XML format to CSV or HTML
xsact programs: Cluster EST sequences

BSD

bsd-sysctl library: Access to the BSD sysctl(3) interface

Classification

hslibsvm library: A FFI binding to libsvm.
HSvm library: Haskell Bindings for libsvm

Clustering

hsgsom library: An implementation of the GSOM clustering algorithm.
kmeans library: K-means clustering algorithm

Code Generation

harpy library: Runtime code generation for x86 machine code
hburg program: Haskell Bottom Up Rewrite Generator
llvm library: Bindings to the LLVM compiler toolkit.
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors

Codec

base64-string library: Base64 implementation for String's.
bzlib library: Compression and decompression in the bzip2 format
Codec-Compression-LZF library: LZF compression bindings.
compression library: Common compression algorithms.
crockford library: An implementation of Douglas Crockford's base32 encoding.
Crypto library and programs: Collects together existing Haskell cryptographic functions into a package
dataenc library and program: Data encoding library
Encode library and programs: Encoding character data
encoding library: A library for various character encodings
fec library: Forward error correction of ByteStrings
HCodecs library: A library to read, write and manipulate MIDI, WAVE, and SoundFont2 files.
hogg library and programs: Library and tools to manipulate the Ogg container format
htar program: Command-line tar archive utility.
iff library: Constructing and dissecting IFF files
LibZip library: Partial bindings to libzip to read zip archives.
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
mime library: Working with MIME types.
mime-string library: MIME implementation for String's.
mp3decoder program: MP3 decoder for teaching.
mucipher library: A library to produce simple ciphers for use with lambdabot.
nano-hmac library: Bindings to OpenSSL HMAC.
nano-md5 library: Efficient, ByteString bindings to OpenSSL.
omnicodec programs: data encoding and decoding command line utilities
ppm library: a tiny PPM image generator
RSA library and program: Implementation of RSA, using the padding schemes of PKCS#1 v2.1.
sexpr library and program: S-expression printer and parser
SHA library and programs: Implementations of the SHA suite of message digest functions
snow-white library: encode any binary instance to white space
stb-image library: A wrapper around Sean Barrett's JPEG/PNG decoder
tar library: Reading, writing and manipulating ".tar" archive files.
translate library: Haskell binding to Google translate
uconv library: String encoding conversion with ICU
utf8-light library: Unicode
utf8-string library: Support for reading and writing UTF8 Strings
zip-archive library and program: Library for creating and modifying zip archives.
zlib library: Compression and decompression in the gzip and zlib formats

Codecs

Codec-Image-DevIL library: An FFI interface to the DevIL library
HSoundFile library: Audio file reading/writing
pngload library: Pure Haskell loader for PNG images

Combinators

data-aviary library: Combinator birds.
DeepArrow library: Arrows for "deep application"
predicates library: A couple of convenience functions for forming predicates.
scc library and programs: Streaming component combinators

Comonads

category-extras library: Various modules and constructs inspired by category theory

Compiler

feldspar-compiler library and program: Compiler for the Feldspar language
flite library and programs: f-lite compiler, interpreter and libraries
hcc program: A toy C compiler.
jhc library: Jhc Haskell compiler
KiCS library and programs: A compiler from Curry to Haskell
lhc programs: LHC Haskell Compiler
optimusprime program: A supercompiler for f-lite
tiger program: Tiger Compiler of Universiteit Utrecht

Compilers/Interpreters

accelerate library: An embedded language for accelerated array processing
baskell program: An interpreter for a small functional language
brainfuck library and program: Brainfuck interpreter
CPBrainfuck program: A simple Brainfuck interpretter.
CPL program: An interpreter of Hagino's Categorical Programming Language (CPL).
dedukti library and program: A type-checker for the λΠ-modulo calculus.
epic library and program: Compiler for a supercombinator language
fst library and program: Finite state transducers
ghci-haskeline program: An implementation of ghci using the Haskeline line-input library.
HARM library and programs: A simple ARM emulator in haskell
Haschoo program: Minimalist R5RS Scheme interpreter
haskeem program: A small scheme interpreter
helisp program: An incomplete Elisp compiler
hiccup program: Relatively efficient Tcl interpreter with support for basic operations
hint library: Runtime Haskell interpreter (GHC API wrapper)
hint-server library: A server process that runs hint.
hjs library and program: JavaScript Parser
hybrid program: A implementation of a type-checker for Lambda-H
idris library and program: Dependently Typed Functional Programming Language
INblobs program: Editor and interpreter for Interaction Nets
lambdacube program: A simple lambda cube type checker.
LambdaShell program: Simple shell for evaluating lambda expressions
llvm library: Bindings to the LLVM compiler toolkit.
pesca program: Proof Editor for Sequent Calculus
piet library and program: A Piet interpreter
swf library: A library for creating Shockwave Flash (SWF) files
TypeIlluminator program: TypeIlluminator is a prototype tool exploring debugging of type errors/
unlambda library and program: Unlambda interpreter
vintage-basic program: Interpreter for microcomputer-era BASIC

Composition

higherorder library: Some higher order functions for Bool and []
TypeCompose library: Type composition classes & instances

Concurrency

accelerate library: An embedded language for accelerated array processing
actor library: Actors with multi-headed receive clauses
AVar library: Mutable variables with Exception handling and concurrency support.
BoundedChan library: Implementation of bounded channels.
caf library: A library of Concurrency Abstractions using Futures.
chp library: An implementation of concurrency ideas from Communicating Sequential Processes
cml library: Events and Channels as in Concurrent ML
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.83
data-ivar library: Write-once variables with concurrency support
eprocess library: *Very* basic Erlang-like process support for Haskell
future library: Supposed to mimics and enhance proposed C++ "future" features
hint-server library: A server process that runs hint.
ivar-simple library: Write once concurrency primitives.
join library: Parallel Join Patterns with Guards and Propagation
lub library: least upper bounds -- information merging
multisetrewrite library: Multi-set rewrite rules with guards and a parallel execution scheme
named-lock library: A named lock that is created on demand.
parallel-tree-search library: Parallel Tree Search
priority-sync library and program: Cooperative task prioritization.
rwlock library: Multiple-read / single-write locks
semaphore-plus library: Various concurrency abstractions built on top of semaphores
stm library: Software Transactional Memory
stm-io-hooks library: An STM monad with IO hooks
stmcontrol library: Control communication among retrying transactions
synchronous-channels library: Synchronous communication channels
tbox library: Transactional variables with IO hooks
TCache library: A Transactional data cache with configurable persistence
threadmanager library: Simple thread management
unamb library and program: Unambiguous choice
unamb-custom library: Functional concurrency with unamb using a custom scheduler.

Concurrent

Workflow library: library for transparent execution of interruptible computations

Configuration

dyre library: Dynamic reconfiguration in Haskell

Console

cmdargs library and program: Command line argument processing
equal-files program: Shell command for finding equal files
historian program: Extract the interesting bits from shell history
hranker program: Basic utility for ranking a list of items
hskeleton library: Skeleton for new Haskell programs
hspresent library and program: A terminal presentation tool
hunp program: Unpacker tool with DWIM
husky program: A simple command line calculator.
internetmarke program: Shell command for constructing custom stamps for German Post
ip6addr program: Command line tool that filters parsed IPv6 Addresses against RFC 4291
mdo program: Command-line tool to run a command on each of the items.
only program: A grep-like tool for filtering on words or lines.
pasty program: A simple command line pasting utility
tkhs programs: Simple Presentation Utility
toilet program: Manage the toilet queue at the IMO
ztail program: Multi-file, colored, filtered log tailer.

Control

action-permutations library: Execute a set of actions (e.g. parsers) in each possible order
Adaptive library and program: Library for incremental computing.
applicative-extras library: Instances for Applicative
arrows library: Arrow classes and transformers
category-extras library: Various modules and constructs inspired by category theory
CC-delcont library: Delimited continuations and dynamically scoped variables
cflp library: Constraint Functional-Logic Programming in Haskell
comonad-random library: Comonadic interface for random values
ContArrow library: Control.Arrow.Transformer.Cont
Control-Engine library: A parallel producer/consumer engine (thread pool)
control-event library: Event scheduling system.
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-failure library: A class for monads which can fail with an error.
control-monad-failure-mtl library: A class for monads which can fail with an error.
control-monad-free library: Free monads and monad transformers
control-monad-omega library: A breadth-first list monad.
control-monad-queue library: Reusable corecursive queues, via continuations.
Coroutine library: Type-safe coroutines using lightweight session types.
DeepArrow library: Arrows for "deep application"
deepseq library: Fully evaluate data structures
event-handlers library: Event handlers
event-monad library: Event-graph simulation monad transformer
explicit-exception library: Exceptions which are explicit in the type signature.
explicit-sharing library: Explicit Sharing of Monadic Effects
extensible-exceptions library: Extensible exceptions
failure library: A simple type class for success/failure computations.
full-sessions library: a monad for protocol-typed network programming
generator library: Python-generators notation for creation of monadic lists
hasim library: Process-Based Discrete Event Simulation library
hmk library and program: A make alternative based on Plan9's mk.
hpc library: Code Coverage Library for Haskell
IfElse library: Anaphoric and miscellaneous useful control-flow
InfixApplicative library: liftA2 for infix operators.
io-reactive library and program: An API for generating TIMBER style reactive objects.
lax library: Lax arrows
lazyio library and program: Run IO actions lazily while respecting their order
level-monad library: Non-Determinism Monad for Level-Wise Search
List library: List monad transformer and class
logict library: A backtracking logic-programming monad.
MaybeT library: MaybeT monad transformer
mmtl library: Modular Monad transformer library
monad-loops library: Monadic loops
monad-param library: Parameterized monads
monad-ran library: Fast monads and monad transformers
monad-tx library: A transactional state monad.
monad-wrap library: Wrap functions such as catch around different monads
MonadCatchIO-mtl library: Monad-transformer version of the Control.Exception module
MonadCatchIO-transformers library: Monad-transformer compatible version of the Control.Exception module
monadiccp library: Constraint Programming
monadloc library and program: A class for monads which can keep a monadic call trace
MonadPrompt library: MonadPrompt, implementation & examples
MonadRandom library: Random-number generation monad.
monads-fd library: Monad classes, using functional dependencies
monads-tf library: Monad classes, using type families
mtl library: Monad transformer library
mtl-tf library: Monad transformer library using type families
mtlx library: Monad transformer library with type indexes, providing 'free' copies.
parallel library: Parallel programming library
parallel-tree-search library: Parallel Tree Search
ports library: The Haskell Ports Library
prelude-plus program: Prelude for rest of us
ProbabilityMonads library: Probability distribution monads.
quantum-arrow library: An embedding of quantum computation as a Haskell arrow
regions library: Provides the region monad for safely opening and working with scarce resources.
regions-monadsfd library: Monads-fd instances for the RegionT monad transformer
regions-monadstf library: Monads-tf instances for the RegionT monad transformer
rmonad library: Restricted monad library
scc library and programs: Streaming component combinators
sessions library: Session Types for Haskell
simple-observer library: The Observer pattern
simple-sessions library: A simple implementation of session types
stream-monad library: Simple, Fair and Terminating Backtracking Monad
streamproc library: Stream Processer Arrow
strict-concurrency library: Strict concurrency abstractions
synchronous-channels library: Synchronous communication channels
transactional-events library: Transactional events, based on Concurrent ML semantics
transformers library: Concrete monad transformers
tree-monad library: Non-Determinism Monad for Tree Search
TypeCompose library: Type composition classes & instances
Workflow library: library for transparent execution of interruptible computations

Crosswords

hpuz library: Haskell bindings for libpuz

Crypto

openssl-createkey library: Create OpenSSL keypairs.

Cryptography

AES library: Fast AES encryption/decryption for bytestrings
crc16 library: Calculate the crc16-ccitt.
Crypto library and programs: Collects together existing Haskell cryptographic functions into a package
digest library: Various cryptographic hashes for bytestrings; CRC32 and Adler32 for now.
hecc library: Elliptic Curve Cryptography for Haskell
hopenssl library: FFI bindings to OpenSSL's EVP digest interface
HsOpenSSL library: (Incomplete) OpenSSL binding for Haskell
PBKDF2 library: Make password-based security schemes more secure.
pkcs1 library: RSA encryption with PKCS1 padding
pureMD5 library: MD5 implementations that should become part of a ByteString Crypto package.
RSA library and program: Implementation of RSA, using the padding schemes of PKCS#1 v2.1.
SHA library and programs: Implementations of the SHA suite of message digest functions
SHA2 library: Fast, incremental SHA hashing for bytestrings

Data

AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-VanillaArray library: Immutable arrays with plain integer indicies.
AC-Vector library: Efficient geometric vectors.
accelerate library: An embedded language for accelerated array processing
adaptive-containers library: Self optimizing container types
AERN-Real library: arbitrary precision interval arithmetic for approximating exact real numbers
AERN-RnToRm library: polynomial function enclosures (PFEs) approximating exact real functions
AERN-RnToRm-Plot library: GL plotting of polynomial function enclosures (PFEs)
algebra library: Algebraic structures
applicative-numbers library: Applicative-based numeric instances
arff library: Generate Attribute-Relation File Format (ARFF) files
ArrayRef library: Unboxed references, dynamic arrays and more
astar library: General A* search algorithm.
attempt library: Concrete data type for handling extensible exceptions as failures.
bert library and program: BERT implementation
bff library and programs: Bidirectionalization for Free! (POPL'09)
bimap library: Bidirectional mapping between two key types
binary library: Binary serialisation for Haskell values using lazy ByteStrings
binary-protocol library: Monad to ease implementing a binary network protocol.
binary-strict library: Binary deserialisation using strict ByteStrings
binarydefer library: Binary serialization with deferred loading
bitarray library: Mutable and immutable bit arrays
bitmap library: A library for handling and manipulating bitmaps.
bitmap-opengl library: OpenGL support for Data.Bitmap.
BitSyntax library: A module to aid in the (de)serialisation of binary data
bloomfilter library: Pure and impure Bloom Filter implementations.
bool-extras library: A fold function for Bool
Boolean library: Generalized booleans
bytestring library: Fast, packed, strict and lazy byte arrays with a list interface
bytestring-class library: Classes for automatic conversion to and from strict and lazy bytestrings.
bytestring-csv library: Parse CSV formatted data efficiently
bytestring-lexing library: Parse literals efficiently from bytestrings
bytestring-trie library: An efficient finite map from (byte)strings to values.
carray library: A C-compatible array library.
cereal library: A binary serialization library
checked library: Bounds-checking integer types.
CLASE library: Cursor Library for A Structured Editor
classify library: Library for classification of media files.
colour library: A model for human colour/color perception
compact-map library: Compact Data.Map implementation using Data.Binary
compact-string library: Fast, packed and strict strings with Unicode support, based on bytestrings.
condorcet library: Library for Condorcet voting
containers-unicode-symbols library: Unicode alternatives for common functions and operators
control-monad-attempt library: Monad transformer for attempt.
convertible library and program: Typeclasses and instances for converting between types
convertible-text program: Typeclasses and instances for converting between types
COrdering library: An algebraic data type similar to Prelude Ordering.
data-accessor library: Utilities for accessing and manipulating fields of records
data-accessor-monadLib library: Accessor functions for monadLib's monads
data-accessor-monads-fd library: Use Accessor to access state in monads-fd State monad class
data-accessor-monads-tf library: Use Accessor to access state in monads-tf State monad type family
data-accessor-mtl library: Use Accessor to access state in mtl State monad class
data-accessor-template library: Utilities for accessing and manipulating fields of records
data-accessor-transformers library: Use Accessor to access state in transformers State monad
data-binary-ieee754 library: Parser/Serialiser for IEEE-754 floating-point values
data-default library: A class for types with a default value
data-hash library: Combinators for building fast hashing functions.
data-ivar library: Write-once variables with concurrency support
data-memocombinators library: Combinators for building memo tables.
data-object program: Represent hierachichal structures, called objects in JSON.
data-ordlist library: Set and bag operations on ordered lists
data-quotientref library: Reference cells that need two independent indices to be accessed.
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-reify-cse library: Common Sub-Expression Elimination for graphs generated by Data.Reify.
data-spacepart library: Deprecated. Now called "spacepart". Space partitioning data structures.
datetime library: Utilities to make Data.Time.* easier to use.
delimited-text library: Parse character delimited textual data
derangement library: Find derangements of lists
digits library: Converts integers to lists of digits and back.
directory-tree library: A simple directory-like tree datatype, with useful IO functions
dlist library: Differences lists
dstring library: Difference strings.
dwarf library: Parser for DWARF debug format.
either-unwrap library: Functions for probing and unwrapping values inside of Either.
elf library: Parser for ELF object format.
enumerable library: A typeclass for enumerating all values a type
event-handlers library: Event handlers
event-list library and program: Event lists with relative or absolute time stamps
failable-list library: A list-like type for lazy streams, which might terminate with an error.
fair-predicates library: Fair Predicates
fclabels library: First class accessor labels.
file-embed library: Use Template Haskell to embed file contents directly.
filestore library: Interface for versioning file stores.
FiniteMap library: A finite map implementation, ...
first-class-patterns library: First class patterns and pattern matching, using type families
fitsio library: A library for reading and writing data files in the FITS data format.
fixpoint library: Data types as fixpoints
fmlist library: FoldMap lists
fraction library: Fractions
fsmActions library: Finite state machines and FSM actions
game-tree library: Searching game trees with alpha-beta pruning
genericserialize library: Serialization library using Data.Generics
geohash library: Geohash latitudes and longitudes.
gofer-prelude library: The Gofer 2.30 standard prelude
gpcsets library: Generalized Pitch Class Sets for Haskell.
gps library: For manipulating GPS coordinates and trails.
grapefruit-records library: A record system
groupoid library: A Groupoid class
HaLeX library and program: HaLeX enables modelling, manipulation and animation of regular languages
hebrew-time library: Hebrew dates and prayer times.
hetero-map library: Pure heterogeneous maps.
hex library: Convert strings into hexadecimal and back.
hinze-streams library: Streams and Unique Fixed Points
histogram-fill library: Library for histograms creation.
HList library: Heterogeneous lists
hmpfr library: Haskell binding to MPFR library
HsJudy library: Judy bindings, and some nice APIs
idna library: Implements IDNA (RFC 3490).
IDynamic library: Indexable, serializable form of Data.Dynamic
infinite-search library: Exhaustively searchable infinite sets.
interpolatedstring-perl6 library: QuasiQuoter for Perl6-style multi-line interpolated strings with "q", ...
interpolatedstring-qq library: QuasiQuoter for Ruby-style multi-line interpolated strings.
Interpolation library: Multiline strings, interpolation and templating.
io-storage library: A key-value store in the IO monad.
irc library: A small library for parsing IRC messages.
isevaluated library: Check whether a value has been evaluated
iteratee library and program: Iteratee-based I/O
ix-shapable library: Reshape multi-dimensional arrays.
joinlist library: Join list - symmetric list type
judy library: Fast, scalable, mutable dynamic arrays, maps and hashes
lazyarray library: Efficient implementation of lazy monolithic arrays (lazy in indexes).
lenses library: Simple Functional Lenses
linear-maps library and programs: Finite maps for linear use
list-grouping library: Functions for grouping a list into sublists
list-tries library: Tries and Patricia tries: finite sets and maps for list keys
ListZipper library: Simple zipper for lists
logfloat library: Log-domain floating point numbers
lub library: least upper bounds -- information merging
luhn library: An implementation of Luhn's check digit algorithm.
macho library: Parser for Mach-O object format.
Measure library: A library for units of measurement
MemoTrie library: Trie-based memo functions
mlist library: Monadic List alternative to lazy I/O
monoid-record library: Support for modifying record fields of monoidal type
monoid-transformer library: Monoid counterparts to some ubiquitous monad transformers
monoids library: Monoids, specialized containers and a general map/reduce framework
msgpack library: A Haskell binding to MessagePack
multirec-binary library: Generic Data.Binary instances using MultiRec.
nat library: Lazy binary natural numbers
network-data library: Library for network data structures (ex: ip/udp/tcp headers and helper functions)
NewBinary library: A binary I/O library
NonEmpty library: Library providing a non-empty list datatype, and total functions operating on it
numbers library: Various number types
ObjectName library: Explicitly handled object names
Omega library: Operations on Presburger arithmetic formulae
OneTuple library: Singleton Tuple
open-witness library: open witnesses
OpenAFP library: IBM AFP document format parser and generator
OpenAFP-Utils programs: Assorted utilities to work with AFP data streams
osx-ar library: Parser for OS X static archive format.
packedstring library: (Deprecated) Packed Strings.
parameterized-data library: Parameterized data library implementing lightweight dependent types
peano-inf library: Lazy Peano numbers including observable infinity value.
pecoff library: Parser for PE/COFF format.
PerfectHash library: A perfect hashing library for mapping bytestrings to values.
pointedlist library: A zipper-like comonad which works as a list, tracking a position.
polytypeable library: Typeable for polymorphic types.
polytypeable-utils library: Utilities for polytypeable.
prelude-plus program: Prelude for rest of us
primitive library: Wrappers for primitive operations
priority-queue library: Simple implementation of a priority queue.
procrastinating-structure library: Pure structures that can be incrementally created in impure code
procrastinating-variable library: Haskell values that cannot be evaluated immediately.
property-list library: XML property list parser
pure-priority-queue library: A pure priority queue.
pure-priority-queue-tests program: Tests for the pure-priority-queue package
pureMD5 library: MD5 implementations that should become part of a ByteString Crypto package.
queue library: Abstraction typeclasses for queue-like things.
Ranged-sets library: Ranged sets for Haskell
ranges library: Ranges and various functions on them.
reflection library: Functional Pearl: Implicit Configurations
RefSerialize library: Write to and read from Strings maintaining internal memory references
regular-xmlpickler library: Generic generation of HXT XmlPickler instances using Regular.
reify library and program: Serialize data
reord library: Ad-hoc Ord instances
RepLib library: Generic programming library with representation types
rosezipper library: Generic zipper implementation for Data.Tree
safe-freeze library: Support for safely freezing multiple arrays in the ST monad.
safecopy library: Binary serialization with version control.
SegmentTree library: Data structure for O(log n) mconcats on list intervals
SG library: Small geometry library for dealing with vectors and collision detection
sgf library: SGF (Smart Game Format) parser
spacepart library: Space partition data structures. Currently only a QuadTree.
spreadsheet library: Read and write spreadsheets from and to CSV files in a lazy way
state library: Data.State
stateref library: Abstraction for things that work like IORef.
StateVar library: State variables
storable library: Storable type class for variable-sized data
storable-complex library: Storable instance for Complex
storable-record library: Elegant definition of Storable instances for records
storable-tuple library: Storable instance for pairs and triples
storablevector library and programs: Fast, packed, strict storable arrays with a list interface like ByteString
storablevector-streamfusion library and program: Conversion between storablevector and stream-fusion lists with fusion
Stream library: A library for manipulating infinite lists.
stream-fusion library: Faster Haskell lists using stream fusion
strict library: Strict data types and String IO.
string-combinators library: Polymorphic functions to build and combine stringlike values
stringprep library: Implements the "StringPrep" algorithm
stringsearch library
stringtable-atom library: Memoize Strings as Atoms for fast comparison and sorting, with maps and sets
strptime library: Efficient parsing of LocalTime using a binding to C's strptime
suffixtree library: Efficient, lazy suffix tree implementation
syb-with-class library: Scrap Your Boilerplate With Class
tagged library: Provides a newtype wrapper for phantom types to avoid passing dummy arguments
tbox library: Transactional variables with IO hooks
TCache library: A Transactional data cache with configurable persistence
Tensor library: Tensor data types
text library: An efficient packed Unicode text type
text-icu library: Bindings to the ICU library
tfp library and program: Type-level programming library using type families
to-string-class library: Converting string-like types to Strings.
to-string-instances library: Instances for the ToString class.
tuple library: Various functions on tuples
type library: Dynamic casting library with support for arbitrary rank type kinds.
type-equality library: Type equality, coercion/cast and other operations.
type-equality-check library: Type equality check
type-int library: Type Level 2s- and 16s- Complement Integers
type-level library: Type-level programming library
typical library: Type level numbers, vectors, list. This lib needs to be extended.
udcode library: Does a set of code words form a uniquely decodable code?
unamb library and program: Unambiguous choice
unamb-custom library: Functional concurrency with unamb using a custom scheduler.
unboxed-containers library and program: Self-optimizing unboxed sets using view patterns and data families
union-find library: Efficient union and equivalence testing of sets.
uniqueid library: Splittable Unique Identifier Supply
universal-binary library: Parser for OS X Universal Binary format.
utility-ht library and program: Various small helper functions for Lists, Maybes, Tuples, Functions
uuid library: For creating, comparing, parsing and printing Universally Unique Identifiers
uvector library: Fast unboxed arrays with a flexible interface
uvector-algorithms library: Efficient algorithms for uvector unboxed arrays
value-supply library: A library for generating values without having to thread state.
Vec library: Fixed-length lists and low-dimensional linear algebra.
Vec-Boolean library: Provides Boolean instances for the Vec package
vector library: Efficient Arrays
WAVE library: WAVE audio file IO library
wavesurfer library: Parse WaveSurfer files
witness library: values that witness types
word24 library and program: 24-bit word and int types for GHC
xcb-types library: Parses XML files used by the XCB project
ZipFold library: Zipping folds

Data Mining

Emping program: derives heuristic rules from nominal data
hmm library: Hidden Markov Model algorithms
hsgsom library: An implementation of the GSOM clustering algorithm.
kmeans library: K-means clustering algorithm

Data Structures

array library: Mutable and immutable arrays
AvlTree library: Balanced binary trees using the AVL algorithm.
bitset library: A functional data structure for efficient membership testing.
bktrees library: A set data structure with approximate searching
bytestring-trie library: An efficient finite map from (byte)strings to values.
collections library: Useful standard collections types and related functions.
containers library: Assorted concrete container types
dequeue library: A typeclass and an implementation for double-ended queues.
EdisonAPI library: A library of efficient, purely-functional data structures (API)
EdisonCore library: A library of efficent, purely-functional data structures (Core Implementations)
EnumMap library: More general IntMap replacement.
fgl library: Martin Erwig's Functional Graph Library
fingertree library: Generic finger-tree structure, with example instances
fingertree-psqueue library: Implementation of priority search queues as finger trees.
gmap library: Composable maps and generic tries.
heap library and program: Heaps in Haskell
hetero-map library: Pure heterogeneous maps.
hgal library: library for computation automorphism group and canonical labelling of a graph
HoleyMonoid library: Monoids with holes.
list-tries library: Tries and Patricia tries: finite sets and maps for list keys
multiset library: The Data.MultiSet container type
nthable library
PerfectHash library: A perfect hashing library for mapping bytestrings to values.
permutation library: A library for permutations and combinations.
PSQueue library: Priority Search Queue
random-access-list library: Random-access lists in Haskell
sparsebit library: Sparse bitmaps for pattern match coverage
statethread library: The ST monad and STRefs
suffixtree library: Efficient, lazy suffix tree implementation
TernaryTrees library and program: Efficient pure ternary tree Sets and Maps
thrist library: Type-threaded list
vector library: Efficient Arrays

Database

anydbm library and program: Interface for DBM-like database systems
berkeleydb library: Pretty BerkeleyDB v4 binding.
BerkeleyDB library: Berkeley DB binding
BerkeleyDBXML library: Berkeley DB XML binding
CouchDB library: CouchDB interface
dbf library: Read and write XBase ".dbf" files
dbmigrations library and programs: An implementation of relational database "migrations"
haskell-tyrant library: Haskell implementation of the Tokyo Tyrant binary protocol
haskelldb library: SQL unwrapper for Haskell.
haskelldb-dynamic library and program: HaskellDB support for the dynamically loaded drivers.
haskelldb-flat library and program: An experimental HaskellDB back-end in pure Haskell (no SQL)
haskelldb-hdbc library: HaskellDB support for HDBC. You will also need one or more back-end specific packages.
haskelldb-hdbc-mysql library and program: HaskellDB support for the HDBC MySQL driver.
haskelldb-hdbc-odbc library and program: HaskellDB support for the HDBC ODBC driver.
haskelldb-hdbc-postgresql library and program: HaskellDB support for the HDBC PostgreSQL driver.
haskelldb-hdbc-sqlite3 library and program: HaskellDB support for the HDBC SQLite driver.
haskelldb-hsql library: HaskellDB support for HSQL. You will also need one or more back-end specific packages.
haskelldb-hsql-mysql library: HaskellDB support for the HSQL MySQL driver.
haskelldb-hsql-odbc library: HaskellDB support for the HSQL ODBC driver.
haskelldb-hsql-postgresql library: HaskellDB support for the HSQL PostgreSQL driver.
haskelldb-hsql-sqlite library: HaskellDB support for the HSQL SQLite driver.
haskelldb-hsql-sqlite3 library: HaskellDB support for the HSQL SQLite driver.
haskelldb-th library: Template Haskell utilities for HaskellDB.
HDBC library and program: Haskell Database Connectivity
HDBC-mysql library: MySQL driver for HDBC
HDBC-odbc library and program: ODBC driver for HDBC
HDBC-postgresql library and program: PostgreSQL driver for HDBC
HDBC-sqlite3 library and program: Sqlite v3 driver for HDBC
hdbc-tuple library: Type save tuples for HDBC
hesql program: Haskell's embedded SQL
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsparql library: A SPARQL query generator and DSL, and a client to query a SPARQL server.
hsql library: Simple library for database access from Haskell.
hsql-mysql library: MySQL driver for HSQL.
hsql-odbc library
hsql-postgresql library: A Haskell Interface to PostgreSQL via the PQ library.
hsql-sqlite3 library: SQLite3 driver for HSQL.
hsSqlite3 library: Sqlite3 bindings
hssqlppp library and programs: Sql parser and type checker
io-storage library: A key-value store in the IO monad.
PCLT-DB library: An addon to PCLT package: enchance PCLT catalog with PostgreSQL powers.
PostgreSQL library: Thin wrapper over the C postgresql library
RefSerialize library: Write to and read from Strings maintaining internal memory references
shapefile library: Parser and related tools for ESRI shapefile format
sphinx library: Haskell bindings to the Sphinx full-text searching deamon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
sqlite library: Haskell binding to sqlite3
Takusen programs: Database library with left-fold interface, for PostgreSQL, Oracle, SQLite, ODBC.
TCache library: A Transactional data cache with configurable persistence
tokyocabinet-haskell library: Haskell binding of Tokyo Cabinet
tokyotyrant-haskell library: FFI bindings to libtokyotyrant
txt-sushi library and programs: Spreadsheets are databases!

Datamining

hslibsvm library: A FFI binding to libsvm.
HSvm library: Haskell Bindings for libsvm

DataStructures

TreeStructures library: Tree structures

Debug

DebugTraceHelpers library: Convenience functions and instances for Debug.Trace
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
GHood library: A graphical viewer for Hood
hpc-strobe library: Hpc-generated strobes for a running Haskell program
KiCS-debugger library and program: debug features for kics
KiCS-prophecy library and program: a transformation used by the kics debugger
simple-reflect library: Simple reflection of expressions containing variables
traced library: Simple evaluation trace
vacuum library: Extract graph representations of ghc heap values.

Dependent Types

Agda library and program: A dependently typed functional programming language and proof assistant
Agda-executable program: Command-line program for type-checking and compiling Agda programs
idris library and program: Dependently Typed Functional Programming Language
ivor library: Theorem proving library based on dependent type theory
pisigma library and program: dependently typed core language
reflection library: Functional Pearl: Implicit Configurations

Desktop

arbtt programs: Automatic Rule-Based Time Tracker
dbus-client library: D-Bus client libraries
dbus-core library and program: Low-level D-Bus protocol implementation
fdo-notify library: Desktop Notifications client
gnome-keyring library: Bindings for libgnome-keyring
tracker library: Client library for Tracker metadata database, indexer and search tool

Development

addLicenseInfo program: Adds license info to the top of a file.
alex program: Alex is a tool for generating lexical analysers in Haskell
arrowp program: preprocessor translating arrow notation into Haskell 98
AspectAG library: Attribute Grammars in the form of an EDSL
BirdPP program: A preprocessor for Bird-style Literate Haskell comments with Haddock markup.
botpp library and program: Build tool for Lambdabot
c2hs program: C->Haskell FFI tool that gives some cross-language type safety
CCA library and program: preprocessor and library for Causal Commutative Arrows (CCA)
change-monger library and program: Parse VCS changelogs into ChangeLogs
Coadjute library: A generic build tool
colorize-haskell library and program: Highligt Haskell source
cpphs library and program: A liberalised re-implementation of cpp, the C pre-processor.
criterion library: Robust, reliable performance measurement and analysis
darcs programs: a distributed, interactive, smart revision control system
darcs-beta programs: a distributed, interactive, smart revision control system
derive library and program: A program and library to derive instances for data types
derive-gadt library and programs: Instance deriving for (a subset of) GADTs.
dyre library: Dynamic reconfiguration in Haskell
error-message library: Composable error messages.
firstify library and program: Defunctionalisation for Yhc Core
ghc-core program: Display GHC's core and assembly output in a pager
ghc-events library and program: Library and tool for parsing .eventlog files from GHC
ghc-mtl library: An mtl compatible version of the Ghc-Api monads and monad-transformers.
ghc-paths library: Knowledge of GHC's installation directories
ghc-syb library: SYB instances for the GHC API
graphmod program: Present the module dependecies of a program as a "dot" graph.
greencard-lib library: A foreign function interface pre-processor library for Haskell
GuiHaskell program: A graphical REPL and development environment for Haskell
haddock program: A documentation-generation tool for Haskell libraries
hake library and program: make tool. ruby : rake = haskell : hake
happraise program: A small program for counting the comments in haskell source
happy program: Happy is a parser generator for Haskell
hasktags program: Produces ctags "tags" and etags "TAGS" files for Haskell programs
hgdbmi library: GDBMI interface (program-driven control of GDB)
highWaterMark program: Memory usage statistics
hlint program: Source code suggestions
hmk library and program: A make alternative based on Plan9's mk.
hoogle program: Haskell API Search
hp2any-core library: Heap profiling helper library
hp2any-graph library and programs: ...
hp2any-manager program: A utility to visialise and compare heap profiles.
hpage program: A scrapbook for Haskell developers
hsc2hs program: A preprocessor that helps with writing Haskell bindings to C code
htags program: A Haskell98 parsing tags program similar to ctags.
hugs2yc library: Hugs Front-end to Yhc Core.
interlude library: Replaces some Prelude functions for enhanced error reporting
jarfind program: Tool for searching java classes, members and fields in classfiles and JAR archives
lambdabot program: Lambdabot is a development tool and advanced IRC bot
lambdabot-utils library: Utility libraries for the advanced IRC bot, Lambdabot
Lastik library: A library for compiling programs in a variety of languages
leksah programs: Haskell IDE written in Haskell
lhs2tex program: Preprocessor for typesetting Haskell sources with LaTeX
loch library and program: Support for precise error locations in source files
maybench library and programs: Automated benchmarking tool
MetaObject library: A meta-object system for Haskell based on Perl 6
microbench library: Microbenchmark Haskell code
mps library: simply oo
mueval library and programs: Safely evaluate Haskell expressions
NoSlow programs: Microbenchmarks for various array libraries
package-vt program: Haskell Package Versioning Tool
pisigma library and program: dependently typed core language
pkggraph program: Package dependency graph for installed packages
pointful program: Pointful refactoring tool
prof2dot program: Convert GHC profiles into GraphViz's dot format
ReviewBoard library and programs: Haskell bindings to ReviewBoard
scion library and program: Haskell IDE library
SourceGraph program: Static code analysis using graph-theoretic techniques.
sparsebit library: Sparse bitmaps for pattern match coverage
sparsecheck library: A Logic Programming Library for Test-Data Generation
th-fold library: TH fold generator
typalyze programs: Analyzes Haskell source files for easy reference
typeof program: Small script for inferring types
uniplate library: Uniform type generic traversals.
uuagc library and program: Attribute Grammar System of Universiteit Utrecht
vacuum-cairo library: Visualize live Haskell data structures using vacuum, graphviz and cairo
vacuum-opengl library and program: Visualize live Haskell data structures using vacuum, graphviz and OpenGL.
vacuum-ubigraph library: Visualize Haskell data structures using vacuum and Ubigraph
visual-graphrewrite library and program: Visualize the graph-rewrite steps of a Haskell program
ycextra library: Additional utilities to work with Yhc Core.
yhccore library: Yhc's Internal Core language.
yi library and program: The Haskell-Scriptable Editor

Distributed Computing

AERN-Net library: Compositional lazy dataflow networks for exact real number computation
HAppS-Data library: HAppS data manipulation libraries
HAppS-IxSet library
HAppS-Server library: Web related tools and services.
HAppS-State library: Event-based distributed state.
HAppS-Util library: Web framework
HAppSHelpers library: Convenience functions for HAppS.
happstack library and programs: The haskell application server stack + code generation
happstack-contrib library and program: Web related tools and services.
happstack-data library and program: Happstack data manipulation libraries
happstack-helpers library: Convenience functions for Happstack.
happstack-ixset library and program: Efficient relational queries on Haskell sets.
happstack-server library and program: Web related tools and services.
happstack-state library and program: Event-based distributed state.
happstack-util library and program: Web framework
Holumbus-Distribution library and program: intra- and inter-program communication
Holumbus-MapReduce library and program: a distributed MapReduce framework
Holumbus-Storage library: a distributed storage system

Distribution

archlinux library: Support for working with Arch Linux packages
archnews program: Convert Arch Linux package updates in RSS to pretty markdown
Blueprint library: Preview of a new build system.
Cabal library: A framework for packaging Haskell software
cabal-install program: The command-line interface for Cabal and Hackage.
cabal-rpm program: RPM package builder for Haskell Cabal source packages.
cabal-setup program: The user interface for building and installing Cabal packages
cabal-upload program: Command-line tool for uploading packages to Hackage
cabal2arch program: Create Arch Linux packages from Cabal packages
cabal2doap program: Cabal to Description-of-a-Project (DOAP)
cabalgraph program: Generate pretty graphs of module trees from cabal files
cabalmdvrpm library and program: Create mandriva rpm from cabal package
cabalrpmdeps library and programs: Autogenerate rpm dependencies from cabal files
darcs-graph program: Generate graphs of darcs repository activity
darcs-monitor program: Darcs repository monitor (sends email)
darcswatch programs: Track application of Darcs patches
franchise library: A package for configuring and building Haskell software
hackage-plot program: Generate cumulative graphs of hackage uploads
hackage-sparks program: Generate sparkline graphs of hackage statistics
hackage2hwn program: Convert Hackage RSS feeds to wiki format for publishing on Haskell.org
hackage2twitter program: Send new Hackage releases to Twitter
hackport program: Hackage and Portage integration tool
haskell-updater program: Rebuild Haskell dependencies in Gentoo
hmk library and program: A make alternative based on Plan9's mk.
hslackbuilder program: HSlackBuilder automatically generates slackBuild scripts from a cabal package
lscabal program: List exported modules from a set of .cabal files
mkbndl program: Makes an OS X .app bundle from a binary.
mkcabal program: Generate cabal files for a Haskell project

Editor

Hedi library and program: Line oriented editor
hpage program: A scrapbook for Haskell developers
leksah programs: Haskell IDE written in Haskell
yi library and program: The Haskell-Scriptable Editor
yi-gtk library: The Haskell-Scriptable Editor, helper package
yi-vty library: The Haskell-Scriptable Editor, helper package

Education

ideas program: Feedback services for intelligent tutoring systems
memscript program: Command line utility for memorizing scriptures or any other text
smartword programs: Web based flash card for Word Smart I and II vocabularies

Error Handling

error-message library: Composable error messages.
failable-list library: A list-like type for lazy streams, which might terminate with an error.
spoon library: Catch errors thrown from pure computations.

Failure

attempt library: Concrete data type for handling extensible exceptions as failures.
control-monad-attempt library: Monad transformer for attempt.
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-failure library: A class for monads which can fail with an error.
control-monad-failure-mtl library: A class for monads which can fail with an error.
convertible-text program: Typeclasses and instances for converting between types
failure library: A simple type class for success/failure computations.
safe-failure library: Library for safe functions

FFI

bindings library: Deprecated package.
bindings-common library: This package is obsolete. Look for bindings-DSL instead.
bindings-directfb library: Low level bindings to DirectFB
bindings-DSL library: Domain specific language for FFI description, on top of hsc2hs.
bindings-fann library: Low level bindings to FANN.
bindings-glib library: Low level bindings to GLib.
bindings-gobject library: Low level bindings to GObject.
bindings-gpgme library: Low level bindings to gpgme.
bindings-gsl library: Low level bindings to GNU GSL.
bindings-levmar library: A binding to the C levmar (Levenberg-Marquardt) library
bindings-libcddb library: Low level binding to libcddb.
bindings-libffi library: Low level bindings to libffi.
bindings-libftdi library: Low level bindings to libftdi.
bindings-libusb library: Low level bindings to libusb.
bindings-posix library: Low level bindings to posix.
bindings-sqlite3 library: Low level bindings to sqlite3.
bindings-uname library: Low-level binding to POSIX uname(3)
bindings-yices library: Bindings to the Yices theorem prover
com library: Haskell COM support library

FFI Tools

hacanon-light library: Template Haskell framework for automatic FFI code generation.
HSFFIG library and programs: Generate FFI import declarations from C include files

Finance

hledger library and program: A command-line (or curses or web-based) double-entry accounting tool.
UMM program: A small command-line accounting tool

Foreign

AppleScript library: Call AppleScript from Haskell.
bindings-yices library: Bindings to the Yices theorem prover
erlang library: FFI interface to Erlang.
errno library: a FFI utility
greencard library and program: GreenCard, a foreign function pre-processor for Haskell.
hlibev library: FFI interface to libev
HPlot library and program: A minimal monadic PLplot interface for Haskell
hsdns library: Asynchronous DNS Resolver
hsyslog library: FFI interface to syslog(3) from POSIX.1-2001.
libffi library: A binding to libffi
LibZip library: Partial bindings to libzip to read zip archives.
mathlink library: Write Mathematica packages in Haskell
matlab library: Matlab bindings and interface
minimung program: Shows how to run grabber on Mac OS X
Salsa library: A .NET Bridge for Haskell
storable library: Storable type class for variable-sized data
storable-record library: Elegant definition of Storable instances for records
storable-tuple library: Storable instance for pairs and triples
winerror library: Error handling for foreign calls to the Windows API.

Foreign Binding

libxslt library: Binding to libxslt

Formal Methods

CSPM-Frontend library: A CSP-M parser compatible with FDR-2.83

FRP

bot library: bots for functional reactive programming
buster library: Almost but not quite entirely unlike FRP
buster-gtk library: Almost but not quite entirely unlike FRP
buster-network library: Almost but not quite entirely unlike FRP
DefendTheKing programs: A simple RTS game
elerea library: A minimalistic FRP library
elerea-examples programs: Example applications for Elerea
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-frp library: Functional Reactive Programming core
grapefruit-records library: A record system
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
peakachu library: Experiemental library for composable interactive programs
reactive library: Push-pull functional reactive programming
reactive-fieldtrip library: Connect Reactive and FieldTrip
reactive-glut library: Connects Reactive and GLUT
wxFruit library and program: An implementation of Fruit using wxHaskell.
Yampa library: Library for programming hybrid systems.

Game

Advgame program: Lisperati's adventure game in Lisp translated to Haskell
armada program: Space-based real time strategy game
astrds program: an incomplete 2d space game
babylon program: An implementation of a simple 2-player board game
bloxorz program: OpenGL Logic Game
breakout program: A simple Breakout game implementation.
brians-brain program: A Haskell implementation of the Brian's Brain cellular automaton
DAG-Tournament program: Real-Time Game Tournament Evaluator
DefendTheKing programs: A simple RTS game
dgs library: Haskell front-end for DGS' bot interface
fallingblocks program: A fun falling blocks game.
foo program: Paper soccer, an OpenGL game.
frag program: A 3-D First Person Shooter Game
FunGEn library: FUNctional Game ENgine
gameclock program: Game clock that shows two analog clock faces
GeBoP program: Several games
haskell-in-space programs: 'Asteroids' arcade games.
hback program: N-back memory game
HCard library: A library for implementing a Deck of Cards
hetris program: Text Tetris
hfov library: Field-of-view calculation for low-resolution 2D raster grids.
hinvaders program: Space Invaders
Hipmunk library: A Haskell binding for Chipmunk.
HipmunkPlayground program: A playground for testing Hipmunk.
HODE library: Binding to libODE
HPong program: A simple OpenGL Pong game based on GLFW
hpylos program: AI of Pylos game with GLUT interface.
hs-pgms library and program: Programmer's Mine Sweeper in Haskell
htzaar program: A two player abstract strategy game.
L-seed library and programs: Plant growing programming game
LambdaHack program: a small roguelike game
life program: Conway's Life cellular automaton
lostcities program: An implementation of an adictive two-player card game
mage program: Rogue-like
MazesOfMonad program: Console-based Role Playing Game
mines program: Minesweeper simulation using neural networks
minesweeper program: Minesweeper game which is always solvable without guessing
Monadius program: 2-D arcade scroller
roguestar-engine program: Sci-fi roguelike (turn-based, chessboard-tiled, role playing) game
roguestar-gl programs: Sci-fi roguelike (turn-based, chessboard-tiled, role playing) game
rsagl library: The RogueStar Animation and Graphics Library
showdown program: A simple gtk based Russian Roulette game.
Shu-thing program: A vector shooter game
SpaceInvaders program: Video game
tetris program: A 2-D clone of Tetris
tic-tac-toe program: Useful if reading "Why FP matters" by John Hughes
topkata programs: OpenGL Arcade Game
turing-music program: Plays music generated by Turing machines with 5 states and 2 symbols
wxAsteroids program: Try to avoid the asteroids with your space ship
ZMachine program: A Z-machine interpreter

Generics

alloy library: Generic programming library
alloy-proxy-fd library: Some add-on instances for the Alloy library
emgm program: Extensible and Modular Generics for the Masses
functorm library: Data.FunctorM (compatibility package)
ListLike library and program: Generic support for list-like structures
multirec library: Generic programming for families of recursive datatypes
multirec-alt-deriver library: Alternative multirec instances deriver
multirec-binary library: Generic Data.Binary instances using MultiRec.
pointless-haskell library: Pointless Haskell library
pointless-lenses library: Pointless Lenses library
regular library: Generic programming library for regular datatypes.
regular-extras library: Additional functions for regular: arbitrary, coarbitrary, and binary get/put.
rewriting library: Generic rewriting library for regular datatypes.
special-functors library: Control.Applicative, Data.Foldable, Data.Traversable (compatibility package)
StrategyLib library
syb library: Scrap Your Boilerplate
xformat library: Extensible, type-safe formatting with scanf- and printf-like functions
zipper library: Generic zipper for families of recursive datatypes

Gentoo

fquery program: Installed package query tool for Gentoo Linux

GHC

ghc-events library and program: Library and tool for parsing .eventlog files from GHC
isevaluated library: Check whether a value has been evaluated
vacuum library: Extract graph representations of ghc heap values.

GIS Programs

terrahs library: A Haskell GIS Programming Environment

Graphics

AC-Colour library: Efficient RGB colour types.
AC-EasyRaster-GTK library: GTK+ pixel plotting.
bacteria program: braindead utility to compose Xinerama backgrounds
bitmap library: A library for handling and manipulating bitmaps.
bitmap-opengl library: OpenGL support for Data.Bitmap.
cal3d library: Haskell binding to the Cal3D animation library.
cal3d-examples programs: Examples for the Cal3d animation library.
cal3d-opengl library: OpenGL rendering for the Cal3D animation library
chalkboard library and programs: Combinators for building and processing 2D images.
chalkboard-viewer library: OpenGL based viewer for chalkboard rendered images.
Chart library: A library for generating 2D Charts and Plots
colour library: A model for human colour/color perception
diagrams library: An EDSL for creating simple diagrams
exif library: A Haskell binding to a subset of libexif
explore program: Experimental Plot data Reconstructor
FieldTrip library: Functional 3D
fractal program: Draw Newton, Julia and Mandelbrot fractals
FTGL library: Portable TrueType font rendering for OpenGL using the Freetype2 library
funcmp library: Functional MetaPost
gd library: A Haskell binding to a subset of the GD graphics library
GLFW library: A Haskell binding for GLFW
GLFW-OGL library: A binding for GLFW (OGL)
glome-hs program: ray tracer
GlomeVec library: Simple 3D vector library
GLURaw library: A raw binding for the OpenGL graphics system
GLUT library: A binding for the OpenGL Utility Toolkit
gnuplot library and program: 2D and 3D plots using gnuplot
GoogleChart library: Generate web-based charts using the Google Chart API
GPipe library: A functional graphics API for programmable GPUs
GPipe-TextureLoad library: Load GPipe textures from filesystem
graphics-drawingcombinators library: A functional interface to 2D drawing in OpenGL
graphicsFormats library: Classes for renderable objects.
graphviz library and program: Graphviz bindings for Haskell.
haha library and program: A simple library for creating animated ascii art on ANSI terminals.
haskgame library: Haskell game library.
HDRUtils library: Utilities for reading, manipulating, and writing HDR images
hevolisa program: Genetic Mona Lisa problem in Haskell
hevolisa-dph program: Genetic Mona Lisa problem in Haskell - using Data Parallel Haskell
hfractal program: OpenGL fractal renderer
HGL library: A simple graphics library based on X11 or Win32
hgl-example program: Various animations generated using HGL
Hieroglyph library: Purely functional 2D graphics for visualization.
hogre library: Haskell binding to a subset of OGRE
hogre-examples programs: Examples for using Hogre.
HPDF library: Generation of PDF documents
HPlot library and program: A minimal monadic PLplot interface for Haskell
hps library: Haskell Postscript
hps-cairo library: Cairo rendering for haskell postscript library
HRay program: Haskell raytracer
hs-captcha library: Generate images suitable for use as CAPTCHAs in online web-form security.
HsHaruPDF library: Haskell binding to libharu (http://libharu.sourceforge.net/)
hsmagick library: FFI bindings for the GraphicsMagick library
hsparklines library: Sparklines for Haskell
IcoGrid library: Library for generating grids of hexagons and pentagons mapped to a sphere.
IFS library and program: Iterated Function System generation for Haskell
Imlib library
internetmarke program: Shell command for constructing custom stamps for German Post
lambdacube-bullet program: Example for combining LambdaCube and Bullet
lambdacube-engine library: 3D rendering engine entirely written in Haskell
lambdacube-examples programs: Examples for LambdaCube
lui library: Purely FunctionaL User Interface
minimung program: Shows how to run grabber on Mac OS X
nehe-tuts programs: Port of the NeHe OpenGL tutorials to Haskell.
nymphaea program: An interactive GUI for manipulating L-systems
obj library: Reads and writes obj models.
ObjectIO library
OGL library: A context aware binding for the OpenGL graphics system
OpenCLRaw library: The OpenCL Standard for heterogenous data-parallel computing
OpenGL library: A binding for the OpenGL graphics system
OpenGLCheck library: Quickcheck instances for various data structures.
OpenGLRaw library: A raw binding for the OpenGL graphics system
OpenVG library: OpenVG (ShivaVG-0.2.1) binding
pgm library: Pure Haskell implementation of PGM image format
printxosd program: Simple tool to display some text on an on-screen display
probability library: Probabilistic Functional Programming
reactive-fieldtrip library: Connect Reactive and FieldTrip
reactive-glut library: Connects Reactive and GLUT
rsagl library: The RogueStar Animation and Graphics Library
scaleimage program: Scale an image to a new geometry
scenegraph library: Scene Graph
SDL library: Binding to libSDL
SDL-gfx library: Binding to libSDL_gfx
SDL-image library: Binding to libSDL_image
SDL-mixer library: Binding to libSDL_mixer
SDL-mpeg library: Binding to the SMPEG library
SDL-ttf library: Binding to libSDL_ttf
SGdemo program: An example of using the SG and OpenGL libraries
soegtk library
stb-image library: A wrapper around Sean Barrett's JPEG/PNG decoder
stb-truetype library: A wrapper around Sean Barrett's TrueType rasterizer library.
SVGFonts library and program
testpattern program: Display a monitor test pattern
timeplot program: A tool for visualizing time series from log files.
Vec-Transform library: Extends the Vec package with some 4x4 transform matrices
vect library: A low-dimensional linear algebra library, tailored to computer graphics.
Win32 library: A binding to part of the Win32 library
wordcloud library: Library for generating word/tag clouds.
wumpus-core library: Pure Haskell PostScript and SVG generation.
X11 library: A binding to the X11 graphics library
X11-extras library: Missing bindings to the X11 graphics library
X11-xdamage library: A binding to the Xdamage X11 extension library
X11-xft library: Bindings to the Xft, X Free Type interface library, and some Xrender parts
X11-xshape library: A binding to the Xshape X11 extension library
Xauth library: A binding to the X11 authentication library
xhb library: X Haskell Bindings
xosd library: A binding to the X on-screen display

Graphs

dom-lt library: The Lengauer-Tarjan graph dominators algorithm.
Graphalyze library: Graph-Theoretic Analysis library.
graphviz library and program: Graphviz bindings for Haskell.

GUI

AutoForms library: GUI library based upon generic programming (SYB3)
barrie library: Declarative Gtk GUI library
clutterhs library: Bindings to the Clutter animation library
gladexml-accessor library: Automagically declares getters for widget handles in specified interface file.
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
gtk2hs-cast-glade library: A type class for cast functions of Gtk2hs: glade package
gtk2hs-cast-glib library: A type class for cast functions of Gtk2hs: glib package
gtk2hs-cast-gnomevfs library: A type class for cast functions of Gtk2hs: gnomevfs package
gtk2hs-cast-gtk library: A type class for cast functions of Gtk2hs: gtk package
gtk2hs-cast-gtkglext library: A type class for cast functions of Gtk2hs: gtkglext package
gtk2hs-cast-gtksourceview2 library: A type class for cast functions of Gtk2hs: gtksourceview2 package
gtk2hs-cast-th library: A type class for cast functions of Gtk2hs: TH package
gtk2hs-rpn library: Adds a module to gtk2hs allowing layouts to be defined using reverse polish notation.
Gtk2hsGenerics library: Convenience functions to extend Gtk2hs.
himerge program: Haskell Graphical User Interface for Emerge
SybWidget library: Library which aids constructing generic (SYB3-based) widgets
wx library: wxHaskell
wxcore library: wxHaskell core
wxdirect library and program: helper tool for building wxHaskell
wxFruit library and program: An implementation of Fruit using wxHaskell.
WxGeneric library: Generic (SYB3) construction of wxHaskell widgets
xtc library: eXtended & Typed Controls for wxHaskell.

Hardware

chalmers-lava2000 library: Hardware description library
parport library: Simply interfacing the parallel port on linux
serialport library: Cross platform serial port library.
Wired library: Wire-aware hardware description
york-lava library: A library for digital circuit description.

Help

CheatSheet program: A Haskell cheat sheet in PDF and literate formats.

Heuristics

Binpack library: Common bin-packing heuristics.

IDE

hpage program: A scrapbook for Haskell developers
leksah programs: Haskell IDE written in Haskell

Interfaces

GuiTV library: GUIs for Tangible Values
hslogger library and program: Versatile logging framework
hslogger-template library: Automatic generation of hslogger functions
hslogger4j library: DEPRECATED hslogger handlers for log4j's XMLLayout
TV library: Tangible Values -- composable interfaces

Internet

hircules program: IRC client

Language

antimirov library and program: Define the language containment (=subtyping) relation on regulare expressions.
ASN1 library: ASN.1 support for Haskell
astview program: A GTK-based abstract syntax tree viewer for custom languages and parsers
astview-utils library: Interfacing between hint and astview
atom library: A DSL for embedded hard realtime applications.
BASIC library: Embedded BASIC
cap program: Interprets and debug the cap language.
chalmers-lava2000 library: Hardware description library
cmonad library: A library for C-like programming
core library: External core parser and pretty printer.
CoreErlang library: Manipulating Core Erlang source code
CSPM-Frontend library: A CSP-M parser compatible with FDR-2.83
curry-base library: Functions for manipulating Curry programs
curry-frontend library and program: Compile the functional logic language Curry to several intermediate formats
data-reify library and programs: Reify a recursive data structure into an explicit graph.
data-reify-cse library: Common Sub-Expression Elimination for graphs generated by Data.Reify.
derive-gadt library and programs: Instance deriving for (a subset of) GADTs.
DrHylo library and program: A tool for deriving hylomorphisms
extcore library: Libraries for processing GHC Core
feldspar-language library: A functional embedded language for DSP and parallelism
ForSyDe library: ForSyDe's Haskell-embedded Domain Specific Language.
free-theorems library: Automatic generation of free theorems.
ftshell program: Shell interface to the FreeTheorems library.
GroteTrap library: Parser and selection library for expression languages.
happstack-facebook library and program: A package for building Facebook applications using Happstack
harp library: HaRP allows pattern-matching with regular expressions
haskell-lexer library: A fully compliant Haskell 98 lexer.
haskell-src library: Manipulating Haskell source code
haskell-src-exts library: Manipulating Haskell source: abstract syntax, lexer, parser, and pretty-printer
haskell-src-meta library: Parse source to template-haskell abstract syntax.
hint library: Runtime Haskell interpreter (GHC API wrapper)
hint-server library: A server process that runs hint.
HJavaScript library: HJavaScript is an abstract syntax for a typed subset of JavaScript.
HJScript library: HJScript is a Haskell EDSL for writing JavaScript programs.
hscolour library and program: Colourise Haskell code.
hsp library: Haskell Server Pages is a library for writing dynamic server-side web pages.
HsParrot library: Haskell integration with Parrot virtual machine
HsPerl5 library: Haskell interface to embedded Perl 5 interpreter
hsx library and program: ...
hubris library and program: Support library for Hubris, the Ruby <=> Haskell bridge
ixdopp program: A preprocessor for expanding "ixdo" notation for indexed monads
jarfind program: Tool for searching java classes, members and fields in classfiles and JAR archives
jmacro library: QuasiQuotation library for programmatic generation of Javascript code.
JsContracts library and program: Design-by-contract for JavaScript
jsmw library: Javascript Monadic Writer base package.
kbq-gu programs: Rpoku spoken word programming language
kure library: Combinators for Strategic Programming
kure-your-boilerplate library: Generator for Boilerplate KURE Combinators
LambdaCalculator program: A basic lambda calculator with beta reduction and a REPL
language-c library: Analysis and generation of C code
language-dot library and program: A library for the analysis and creation of Graphviz DOT files
language-python library: Parsing and pretty printing of Python code.
language-python-colour program: Generate coloured XHTML for Python code.
language-sh library: A package for parsing shell scripts
lhs2tex program: Preprocessor for typesetting Haskell sources with LaTeX
linkcore program: Combines multiple GHC Core modules into a single module
lojban library and program: Useful utilities for the Lojban language
LslPlus program: An execution and testing framework for the Linden Scripting Language (LSL)
mecha library: Mecha is a solid modeling language geared for machine design.
ministg program: an interpreter for an operational semantics for the STG machine.
mueval library and programs: Safely evaluate Haskell expressions
optimusprime program: A supercompiler for f-lite
pisigma library and program: dependently typed core language
Plural library: Pluralize English words
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors
Pugs program: A Perl 6 Implementation
she program: A Haskell preprocessor adding miscellaneous features
show library: 'Show' instances for Lambdabot
sized-types library and programs: Sized types in Haskell.
template-haskell library
th-lift library: Derive Template Haskell's Lift class for datatypes.
thih library and program: Typing Haskell In Haskell
trhsx library: Deprecated
TTTAS library: Typed Transformations of Typed Abstract Syntax
type-settheory library: Type-level sets and functions expressed as types
urldisp-happstack library: Simple, declarative, expressive URL routing -- on happstack.
URLT library: Library for maintaining correctness of URLs within an application.
vhdl library: VHDL AST and pretty printer
WebBits library: JavaScript analysis tools
WebBits-Html library: JavaScript analysis tools
webidl library and programs: Parser and Pretty Printer for the Web IDL Language
Wired library: Wire-aware hardware description
zeroth library and program: ZeroTH - remove unnecessary TH dependencies

List

lcs library: Find longest common sublist of two lists
list-extras library: Common not-so-common functions for lists
split library: Combinator library for splitting lists.
utility-ht library and program: Various small helper functions for Lists, Maybes, Tuples, Functions

Math

AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Vector library: Efficient geometric vectors.
AERN-Net library: Compositional lazy dataflow networks for exact real number computation
AERN-Real library: arbitrary precision interval arithmetic for approximating exact real numbers
AERN-RnToRm library: polynomial function enclosures (PFEs) approximating exact real functions
AERN-RnToRm-Plot library: GL plotting of polynomial function enclosures (PFEs)
antimirov library and program: Define the language containment (=subtyping) relation on regulare expressions.
blas library: Bindings to the BLAS library
caldims library and program: Calculation tool and library supporting units
cmath library: A binding to the standard C math library
combinat library: Generation of various combinatorial objects.
Decimal library: Decimal numbers with variable precision
dimensional library: Statically checked physical dimensions.
erf library: The error function, erf, and friends
fad library: Forward Automatic Differentiation.
fft library: Bindings to the FFTW library.
gnuplot library and program: 2D and 3D plots using gnuplot
gsl-random library: Bindings the the GSL random number generation facilities.
gsl-random-fu library: Instances for using gsl-random with random-fu
HaskellForMaths library: Combinatorics, group theory, commutative algebra, non-commutative algebra
HERA library
hgeometric library: A geometric library with bindings to GPC.
hmatrix library: Linear algebra and numerical computations
hmatrix-static library: hmatrix with vector and matrix sizes encoded in types
hmpfr library: Haskell binding to MPFR library
homeomorphic library: Homeomorphic Embedding Test
HsASA library: A haskell interface to Lester Ingber's adaptive simulating annealing code
hstats library: Statistical Computing in Haskell
hTensor library: Multidimensional arrays and simple tensor computations.
ieee library: Approximate comparisons for IEEE floating point numbers
lazysplines library: Differential solving with lazy splines
levmar library: An implementation of the Levenberg-Marquardt algorithm
logfloat library: Log-domain floating point numbers
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
matlab library: Matlab bindings and interface
matrix-market library: Read and write NIST Matrix Market files
mersenne-random library: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister
mersenne-random-pure64 library: Generate high quality pseudorandom numbers purely using a Mersenne Twister
Monocle library: Symbolic computations in strict monoidal categories with LaTeX output.
monoids library: Monoids, specialized containers and a general map/reduce framework
monte-carlo library: A monad and transformer for Monte Carlo calculations.
nat library: Lazy binary natural numbers
nimber library: An implementation of (finite) nimbers
non-negative library and program: Non-negative numbers
np-extras library: NumericPrelude extras
numbers library: Various number types
numeric-prelude library and programs: An experimental alternative hierarchy of numeric type classes
numeric-quest library: Math and quantum mechanics
numtype library: Type-level (low cardinality) integers.
oeis library: Interface to the Online Encyclopedia of Integer Sequences
Operads library: Groebner basis computation for Operads.
permutation library: A library for permutations and combinations.
probability library: Probabilistic Functional Programming
pure-fft library: Fast Fourier Transform
random-fu library: Random number generation
SG library: Small geometry library for dealing with vectors and collision detection
species library: Computational combinatorial species
statistics library: A library of statistical types, data, and functions
statistics-fusion library: An obsolete implementation of high performance, minimal statistics functions
type-settheory library: Type-level sets and functions expressed as types
Vec library: Fixed-length lists and low-dimensional linear algebra.
Vec-Boolean library: Provides Boolean instances for the Vec package
Vec-Transform library: Extends the Vec package with some 4x4 transform matrices
vect library: A low-dimensional linear algebra library, tailored to computer graphics.
vector-space library: Vector & affine spaces, linear maps, and derivatives (requires ghc 6.9 or better)
yices library: Haskell programming interface to Yices SMT solver

Media

ffmpeg-tutorials programs: Tutorials on ffmpeg usage to play video/audio
hs-ffmpeg library: Bindings to FFMPEG library

Middleware

TCache library: A Transactional data cache with configurable persistence
Workflow library: library for transparent execution of interruptible computations

Monadic Regions

IOR library: Region based resource management for the IO monad.
regions library: Provides the region monad for safely opening and working with scarce resources.
regions-monadsfd library: Monads-fd instances for the RegionT monad transformer
regions-monadstf library: Monads-tf instances for the RegionT monad transformer

Monads

category-extras library: Various modules and constructs inspired by category theory
compose-trans library: Composable monad transformers
Consumer library: A monad and monad transformer for consuming streams
control-monad-exception library: Explicitly typed, checked exceptions with stack traces
control-monad-exception-monadsfd library: Monads-fd instances for the EMT exceptions monad transformer
control-monad-exception-monadstf library: Monads-tf instances for the EMT exceptions monad transformer
control-monad-exception-mtl library: MTL instances for the EMT exceptions monad transformer
control-monad-failure library: A class for monads which can fail with an error.
control-monad-failure-mtl library: A class for monads which can fail with an error.
control-monad-free library: Free monads and monad transformers
data-accessor-monadLib library: Accessor functions for monadLib's monads
explicit-sharing library: Explicit Sharing of Monadic Effects
failure library: A simple type class for success/failure computations.
iException library: Version of Control.Exception using InterleavableIO.
infinite-search library: Exhaustively searchable infinite sets.
interleavableGen program: Generates a version of a module using InterleavableIO
interleavableIO library: Use other Monads in functions that asks for an IO Monad.
lazyio library and program: Run IO actions lazily while respecting their order
level-monad library: Non-Determinism Monad for Level-Wise Search
monad-interleave library: Monads with an unsaveInterleaveIO-like operation.
monad-ran library: Fast monads and monad transformers
monad-tx library: A transactional state monad.
MonadLab library and program: Automatically generate layered monads
monadLib library: A collection of monad transformers.
monadloc library and program: A class for monads which can keep a monadic call trace
pqueue-mtl library: Fully encapsulated monad transformers with queuelike functionality.
probability library: Probabilistic Functional Programming
stateful-mtl library: Typeclass instances for monad transformer stacks with an ST thread at the bottom.
statethread library: The ST monad and STRefs
STMonadTrans library: A monad transformer version of the ST monad
stream-monad library: Simple, Fair and Terminating Backtracking Monad
tree-monad library: Non-Determinism Monad for Tree Search
ZFS library: Oleg's Zipper FS

Music

alsa library: Binding to the ALSA Library API.
alsa-seq-tests programs: Tests for the ALSA sequencer library.
hamusic library and programs: Library to handle abstract music
haskore library and programs: The Haskore Computer Music System
haskore-realtime library: Routines for realtime playback of Haskore songs
haskore-supercollider library and programs: Haskore back-end for SuperCollider
haskore-synthesizer library and program: Music rendering coded in Haskell
haskore-vintage library: The February 2000 version of Haskore.
hCsound library: interface to CSound API
hemkay program: A module music mixer and player
hemkay-core library: A device independent module music mixer
hmt library: Haskell Music Theory
midi library and program: Handling of MIDI messages and files
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
synthesizer-alsa library and programs: Control synthesizer effects via ALSA/MIDI
YampaSynth programs: Software synthesizer

Natural Language Processing

estimators library: Tool for managing probability estimation
GenI library and program: A natural language generator (specifically, an FB-LTAG surface realiser)
geniconvert program: Conversion utility for the GenI generator
hmm library: Hidden Markov Model algorithms
hs-gizapp library: Haskell wrapper around the GIZA++ toolkit.
logfloat library: Log-domain floating point numbers
NGrams program: Simple application for calculating n-grams using Google.
numerals library: Utilities for working with numerals
penn-treebank library: Tools for manipulating the Penn TreeBank
phonetic-code library: Phonetic codes: Soundex and Phonix
PTQ programs: An implementation of Montague's PTQ.
semiring program: Semirings, ring-like structures used for dynamic programming applications
stemmer library: Haskell bindings to the Snowball stemming library.
WordNet library: Haskell interface to the WordNet database

Network

adhoc-network library: Ad-hoc P2P network protocol
AGI library: A library for writing AGI scripts for Asterisk
ApplePush library and program: Library for Apple Push Notification Service
Barracuda library and program: An ad-hoc P2P chat program
cgi library: A library for writing CGI programs
cgi-undecidable library: Undecidable instances for the cgi package.
conjure library and program: A BitTorrent client
curl library: Haskell binding to libcurl
dbus-client library: D-Bus client libraries
dbus-core library and program: Low-level D-Bus protocol implementation
dgs library: Haskell front-end for DGS' bot interface
dnsrbl library: Asynchronous DNS RBL lookup
download library: High-level file download based on URLs
download-curl library: High-level file download based on URLs
Etherbunny library and program: A network analysis toolkit for Haskell
EventSocket library: Interfaces with FreeSwitch Event Socket.
fastcgi library: A Haskell library for writing FastCGI programs
ftphs library and program: FTP Client and Server Library
GeoIp library: Pure bindings for the MaxMind IP database.
gitit library and programs: Wiki using happstack, git or darcs, and pandoc.
gopherbot program: Spidering robot to download files from Gopherspace
gravatar library: Find the url of the gravatar associated with an email address.
GrowlNotify library and program: Notification utility for Growl.
gsasl library: Bindings for GNU SASL
HackMail library and program: A Procmail Replacement as Haskell EDSL
HaskellNet library: network related libraries such as POP3, SMTP, IMAP
haxr library: XML-RPC client and server library.
haxr-th library: Automatic deriving of XML-RPC structs for Haskell records.
hichi programs: haskell robot for IChat protocol
HNM library and program: Happy Network Manager
hoauth library: A Haskell implementation of OAuth 1.0a protocol.
Holumbus-Distribution library and program: intra- and inter-program communication
hpodder program: Podcast Aggregator (downloader)
hS3 library and program: Interface to Amazon's Simple Storage Service (S3)
hsdns library: Asynchronous DNS Resolver
hsgnutls library: Library wrapping the GnuTLS API.
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsmtpclient library: Simple SMTP Client
hsns program: a miniature network sniffer
hsp-cgi library: Facilitates running Haskell Server Pages web pages as CGI programs.
hspr-sh library: Session handler for HSP
hspread library: A client library for the spread toolkit
hszephyr library: Simple libzephyr bindings
HTTP library: A library for client-side HTTP
http-monad library and program: Monad abstraction for HTTP communication allowing lazy transfer and non-I/O simulation
http-server library: A library fro writing Haskell web servers.
HTTP-Simple library: DEPRECATED Enable simple wrappers to Network.HTTP
http-wget library: Provide a simple HTTP client interface by wrapping the wget command line tool.
httpd-shed library and program: A simple web-server with an interact style API
hums program: Haskell UPnP Media Server
hyena library: Simple web application server
ip6addr program: Command line tool that filters parsed IPv6 Addresses against RFC 4291
irc library: A small library for parsing IRC messages.
ircbouncer program: IRC bouncer
LDAP library and program: Haskell binding for C LDAP API
libmpd library: An MPD client library.
Lucu library and program: HTTP Daemonic Library
matsuri program: ncurses XMPP client
memcached library: haskell bindings for memcached
n-m library and program: Utility to call iwconfig.
NetSNMP library: Bindings for net-snmp's C API for clients
network library: Networking-related facilities
network-bytestring library: Fast, memory-efficient, low-level networking
network-data library: Library for network data structures (ex: ip/udp/tcp headers and helper functions)
network-dbus library: D-Bus
network-fancy library: Networking support with a cleaner API
network-multicast library: Simple multicast library
network-protocol-xmpp library: Client <-> Server communication over XMPP
network-server library and program: A light abstraction over sockets & co. for servers
nntp library: Library to connect to an NNTP Server
openid library: An implementation of the OpenID-2.0 spec.
orchid library: Haskell Wiki Library
orchid-demo program: Haskell Wiki Demo
pcap library: A system-independent interface for user-level packet capture
pop3-client library: POP3 Client Library
postmaster program: Postmaster ESMTP Server
Ranka program: HTTP to XMPP omegle chats gate.
recaptcha library: Functions for using the reCAPTCHA service in web applications.
rss2irc program: watches an RSS/Atom feed and writes it to an IRC channel
salvia library: Lightweight Haskell Web Server Framework
salvia-extras library: Collection of non-fundamental request handler for the Salvia web server.
scgi library: A Haskell library for writing SCGI programs.
Scurry program: A cross platform P2P VPN application built using Haskell.
sendfile library: A portable sendfile library
simplesmtpclient library: Very simple SMTP Client
SMTPClient library: A simple SMTP client
starling library: A memcached client
tcp library: A purely functional TCP implementation
torrent library: BitTorrent file parser.
twidge program: Unix Command-Line Twitter and Identica Client
twitter program: A Haskell-based CLI Twitter client
urlcheck program: Parallel link checker
UrlDisp library: Url dispatcher. Helps to retain friendly URLs in web applications.
winio library: I/O library for Windows
WL500gPControl programs: A simple command line tools to control the Asus WL500gP router
WL500gPLib library and program: A simple library to access to the WL 500gP router from the Haskell code
wol library and program: Send a Wake on LAN Magic Packet
wp-archivebot program: Subscribe to a wiki's RSS feed and archive external links
XMPP library: XMPP library
yjftp library and program: CUI FTP client like 'ftp', 'ncftp'
Yogurt library: A MUD client library
Yogurt-Standalone program: A functional MUD client

Network APIs

simplenote library: Haskell interface for the simplenote API.

Number Theory

Numbers library: An assortment of number theoretic functions
NumberSieves library: Number Theoretic Sieves: primes, factorization, and Euler's Totient

Numeric

repr library: Render overloaded expressions to their textual representation.
rungekutta library: A collection of explicit Runge-Kutta methods of various orders

Numerical

AC-Colour library: Efficient RGB colour types.
AC-HalfInteger library: Efficient half-integer type.
AC-Vector library: Efficient geometric vectors.
applicative-numbers library: Applicative-based numeric instances
bindings-levmar library: A binding to the C levmar (Levenberg-Marquardt) library
ieee-utils library: ieee-utils
levmar library: An implementation of the Levenberg-Marquardt algorithm
levmar-chart library and program: Plots the results of the Levenberg-Marquardt algorithm in a chart
monoids library: Monoids, specialized containers and a general map/reduce framework
numerals library: Utilities for working with numerals
primes library: Efficient, purely functional generation of prime numbers
pure-fft library: Fast Fourier Transform
roman-numerals library: Parsing and pretty printing of Roman numerals

OAuth

hoauth library: A Haskell implementation of OAuth 1.0a protocol.

Other

external-sort library: Sort large arrays on your hard drive. Kind of like the unix util sort.
hsgtd program: Console-based gettings-things-done application
lub library: least upper bounds -- information merging
RandomDotOrg library: Interface to random.org
unamb library and program: Unambiguous choice

Parsing

attoparsec library: Fast combinator parsing with Data.ByteString.Lazy
binary library: Binary serialisation for Haskell values using lazy ByteStrings
binary-strict library: Binary deserialisation using strict ByteStrings
bytestringparser library: Combinator parsing with Data.ByteString.Lazy
bytestringparser-temporary library: Combinator parsing with Data.ByteString.Lazy
cereal library: A binary serialization library
ChristmasTree library: ...
ConfigFile library and program: Configuration file reading & writing
data-reify library and programs: Reify a recursive data structure into an explicit graph.
EEConfig library: ExtremlyEasyConfig - Extremly Simple parser for config files
fez-conf library: Simple functions for loading config files
hsemail library: Internet Message Parsers
hsemail-ns library: Internet Message Parsers
IndentParser library: Combinators for parsing indentation based syntatic structures
infix library: Infix expression re-parsing (for HsParser library)
kangaroo library: Random access binary combinator parser.
lispparser library: Simple parser for LISP S-expressions
mtlparse library: parse library use mtl package
PArrows library: Arrow parser combinators similar to Parsec
parse-dimacs library: DIMACS CNF parser library
parsec library: Monadic parser combinators
parsely library
ParserFunction library: An algorithm for parsing Expressions.
parsimony library: Monadic parser combinators derived from Parsec
penn-treebank library: Tools for manipulating the Penn TreeBank
polyparse library: A variety of alternative parser combinator libraries.
property-list library: XML property list parser
RefSerialize library: Write to and read from Strings maintaining internal memory references
roman-numerals library: Parsing and pretty printing of Roman numerals
safecopy library: Binary serialization with version control.
strptime library: Efficient parsing of LocalTime using a binding to C's strptime
tconfig library: Simple text configuration file parser library.
uulib library: Haskell Utrecht Tools Library
WikimediaParser library: A parser for wikimedia style article markup.
xml-parsec library: Parsing XML with Parsec

Pattern Classification

DecisionTree library: A very simple implementation of decision trees for discrete attributes.

Performance

criterion library: Robust, reliable performance measurement and analysis

Phantom Types

tagged library: Provides a newtype wrapper for phantom types to avoid passing dummy arguments

Physics

bullet library: A wrapper for the Bullet physics engine.
fitsio library: A library for reading and writing data files in the FITS data format.
Hipmunk library: A Haskell binding for Chipmunk.
HipmunkPlayground program: A playground for testing Hipmunk.
HODE library: Binding to libODE
lambdacube-bullet program: Example for combining LambdaCube and Bullet

PL/SQL Tools

PlslTools program: So far just a lint like program for PL/SQL. Diff and refactoring tools are planned

Profiling

ghc-events library and program: Library and tool for parsing .eventlog files from GHC
hp2any-core library: Heap profiling helper library
hp2any-graph library and programs: ...
hp2any-manager program: A utility to visialise and compare heap profiles.
NoSlow programs: Microbenchmarks for various array libraries

Program Transformation

optimusprime program: A supercompiler for f-lite

Protocol

hoauth library: A Haskell implementation of OAuth 1.0a protocol.

Pugs

HsParrot library: Haskell integration with Parrot virtual machine
HsPerl5 library: Haskell interface to embedded Perl 5 interpreter
HsSyck library: Fast, lightweight YAML loader and dumper
MetaObject library: A meta-object system for Haskell based on Perl 6
Pugs program: A Perl 6 Implementation
pugs-compat library: Portable Haskell/POSIX layer for Pugs
pugs-DrIFT library and program: DrIFT with pugs-specific rules.
regex-pcre-builtin library: Replaces/Enhances Text.Regex
stringtable-atom library: Memoize Strings as Atoms for fast comparison and sorting, with maps and sets

Reactivity

bot library: bots for functional reactive programming
elerea library: A minimalistic FRP library
elerea-examples programs: Example applications for Elerea
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-frp library: Functional Reactive Programming core
grapefruit-records library: A record system
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
io-reactive library and program: An API for generating TIMBER style reactive objects.
reactive library: Push-pull functional reactive programming
wxFruit library and program: An implementation of Fruit using wxHaskell.
Yampa library: Library for programming hybrid systems.

Reflection

data-reify library and programs: Reify a recursive data structure into an explicit graph.
reflection library: Functional Pearl: Implicit Configurations
typehash library: Create a unique hash value for a type.

RFC

idna library: Implements IDNA (RFC 3490).

Scientific Simulation

simgi program: stochastic simulation engine

Screensaver

TimePiece library and program: A simple tile-based digital clock screen saver

Scripting

hslua library: A Lua language interpreter embedding in Haskell

Search

infinite-search library: Exhaustively searchable infinite sets.
sphinx library: Haskell bindings to the Sphinx full-text searching deamon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
stringsearch library

Security

GoogleSB library: Interface to Google Safe Browsing API
jail library: Jailed IO monad.

Semantic Web

swish library and programs: A semantic web toolkit.

Sound

alsa library: Binding to the ALSA Library API.
alsa-midi library and programs: Bindings for the ALSA sequencer API (MIDI stuff)
alsa-seq-tests programs: Tests for the ALSA sequencer library.
ALUT library: A binding for the OpenAL Utility Toolkit
dsp library: Haskell Digital Signal Processing
freesound library and program: Access the Freesound Project database
haskore library and programs: The Haskore Computer Music System
haskore-realtime library: Routines for realtime playback of Haskore songs
haskore-supercollider library and programs: Haskore back-end for SuperCollider
haskore-synthesizer library and program: Music rendering coded in Haskell
hbeat program: A simple step sequencer GUI.
hCsound library: interface to CSound API
hdf library: Haskell data flow library for audio processing
hemkay program: A module music mixer and player
hemkay-core library: A device independent module music mixer
hmeap library: Haskell Meapsoft Parser
hmidi library: Binding to the OS level MIDI services
hmp3 program: An ncurses mp3 player written in Haskell
hommage library: Haskell Offline Music Manipulation And Generation EDSL
hommage-ds library: DirectSound extension (Windows) for the Hommage sound library
hosc library: Haskell Open Sound Control
hsc3 library: Haskell SuperCollider
hsc3-db library: Haskell SuperCollider Unit Generator Database
hsc3-dot library: haskell supercollider graph drawing
hsc3-lang library: Haskell SuperCollider Language
hsc3-process library: Create and control scsynth processes
hsc3-rec library: Haskell SuperCollider Record Variants
hsc3-sf library: Haskell SuperCollider SoundFile
hsc3-unsafe library: Unsafe Haskell SuperCollider
hsndfile library: Haskell bindings for libsndfile
HSoundFile library: Audio file reading/writing
idiii library: ID3v2 tag editing-suite
jack library and program: Bindings for the JACK Audio Connection Kit
libmpd library: An MPD client library.
midi library and program: Handling of MIDI messages and files
OpenAL library: A binding to the OpenAL cross-platform 3D audio API
opensoundcontrol-ht library: Haskell OpenSoundControl utilities
portaudio library: Haskell bindings for the PortAudio library.
PortMidi library: A binding for PortMedia/PortMidi
pulse-simple library: binding to Simple API of pulseaudio
sample-frame library: Handling of samples in an (audio) signal
sample-frame-np library: Orphan instances for types from sample-frame and numericprelude
sonic-visualiser library and program: Sonic Visualiser
sox library: Play, write, read, convert audio signals using Sox
supercollider-ht library and program: Haskell SuperCollider utilities
supercollider-midi programs: Demonstrate how to control SuperCollider via ALSA-MIDI
synthesizer library and programs: Audio signal processing coded in Haskell
synthesizer-alsa library and programs: Control synthesizer effects via ALSA/MIDI
synthesizer-core library and programs: Audio signal processing coded in Haskell: Low level part
synthesizer-dimensional library and programs: Audio signal processing with static physical dimensions
synthesizer-inference library and program: Audio signal processing with dynamic physical dimensions
taglib library: Binding to TagLib (ID3 tag library)
truelevel program: Audio file compressor-limiter
wavconvert program: Command-line tool for converting audio files and filling in ID3 tags
WAVE library: WAVE audio file IO library
wavesurfer library: Parse WaveSurfer files
YampaSynth programs: Software synthesizer

Source-tools

djinn program: Generate Haskell code from a type
ftshell program: Shell interface to the FreeTheorems library.
htags program: A Haskell98 parsing tags program similar to ctags.
ixdopp program: A preprocessor for expanding "ixdo" notation for indexed monads
preprocessor-tools library: A framework for extending Haskell's syntax via quick-and-dirty preprocessors

Statistics

statistics library: A library of statistical types, data, and functions

Stochastic Control

teams library: Graphical modeling tools for sequential teams

System

augeas library and program: A Haskell FFI wrapper for the Augeas API
autoproc library and program: EDSL for Procmail scripts
bamse library and programs: A Windows Installer (MSI) generator framework
bindings-uname library: Low-level binding to POSIX uname(3)
bla program: a stupid cron
bluetile programs: A modern tiling window manager with a gentle learning curve
bsd-sysctl library: Access to the BSD sysctl(3) interface
byteorder library: native byte-ordering of the system
bytestring-mmap library: mmap support for strict ByteStrings
c-io library: C IO.
cabal-query library: Helpers for quering .cabal files or hackageDB's 00-index.tar
cabal2spec program: Generates RPM Spec files from cabal files
cautious-file library: Ways to write a file cautiously, ...
clock library: High-resolution clock and timer functions: realtime, monotonic, cputime, etc.
colock library: thread-friendly file locks that don't block the entire program
cpuid library: Binding for the cpuid machine instruction on x86 compatible processors
cpuperf program: Modify the cpu frequency on OpenBSD systems
crack library: A haskell binding to cracklib
darcs-buildpackage programs: Tools to help manage Debian packages with Darcs
datapacker program: Tool to help pack files into the minimum number of CDs/DVDs/etc
debian library and programs: Modules for working with the Debian package system
debian-binary library and programs: Utilities to work with debian binary packages
denominate library and program: Functions supporting bulk file and directory name normalization.
dfsbuild program: Build Debian From Scratch CD/DVD images
directory library: library for directory handling
directory-tree library: A simple directory-like tree datatype, with useful IO functions
DisTract library and programs: Distributed Bug Tracking System
dtrace library and program: Haskell interface to the DTrace system tracing utility
dzen-utils library: Utilities for creating inputs for dzen.
epoll library: epoll bindings
executable-path library: Finding out the full path of the executable.
explicit-iomodes library: File handles with explicit IOModes
FileManip library: Expressive file and directory manipulation for Haskell.
FileManipCompat library: Expressive file and directory manipulation for Haskell.
filepath library: Library for manipulating FilePath's in a cross platform way.
FindBin library: Locate directory of original program
flock library: Wrapper for flock(2)
Glob library: Globbing library
goa library: GHCi bindings to lambdabot
halfs library and programs: Haskell File System
harchive programs: Networked content addressed backup and restore software.
hark program: A Gentoo package query tool.
hashed-storage library and program: Hashed file storage support code.
hdaemonize library: utilities for UNIX daemon writing
HFuse library: HFuse is a binding for the Linux FUSE library.
hg-buildpackage programs: Tools to help manage Debian packages with Mercurial
hinotify library: Haskell binding to INotify
hinstaller library: Installer wrapper for Haskell applications
hmidi library: Binding to the OS level MIDI services
HNM library and program: Happy Network Manager
hpapi library: Binding for the PAPI library
hscamwire library: Haskell bindings to IIDC1394 cameras, via Camwire
hsclock program: An elegant analog clock using Haskell, GTK and Cairo
hsdip library and program: hsdip - a Diplomacy parser/renderer
HSH library and program: Library to mix shell scripting with Haskell programs
HSHHelpers library: Convenience functions that use HSH, instances for HSH.
hsntp library and programs: Libraries to use SNTP protocol and small client/server implementations.
HsSVN library: (Part of) Subversion binding for Haskell
hsXenCtrl library: FFI bindings to the Xen Control library.
hurdle program: Extract function names from Windows DLLs.
io-capture library: capture IO action's stdout and stderr
io-storage library: A key-value store in the IO monad.
IOR library: Region based resource management for the IO monad.
ipc library: High level inter-process communication library
iteratee library and program: Iteratee-based I/O
jail library: Jailed IO monad.
leapseconds-announced library: Leap seconds announced at library release time.
libexpect library: Library for interacting with console applications via pseudoterminals.
linkchk program: linkchk is a network interface link ping monitor.
ls-usb program: List USB devices
make-hard-links program: Change duplicated files into hard-links.
matrix-market library: Read and write NIST Matrix Market files
mersenne-random library: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister
mersenne-random-pure64 library: Generate high quality pseudorandom numbers purely using a Mersenne Twister
miniplex library and programs: simple 1-to-N interprocess communication
mmap library and program: Memory mapped files for POSIX and Windows
mpdmate program: MPD/PowerMate executable
network-server library and program: A light abstraction over sockets & co. for servers
newports program: List ports newer than N days on a FreeBSD system
old-locale library: locale library
old-time library: Time library
parsedate library: Data and time parsing for CalendarTime
pathtype library: Type-safe replacement for System.FilePath etc
Pipe library: Process piping library
plugins library: Dynamic linking for Haskell and C objects
pony program: Can I have a pony?
popenhs library: popenhs is a popen-like library for Haskell.
porte library and program: FreeBSD ports index search and analysis tool
posix-realtime library: POSIX Realtime functionality
powermate library: PowerMate bindings
prelude-plus program: Prelude for rest of us
process library: Process libraries
progressbar library and program: Progressbar API
random library: random number library
random-shuffle library: Random shuffle implementation.
random-stream library: An infinite stream of random data
randomgen program: A fast, SMP parallel random data generator
randsolid program: Set the background of your root window to a random colour.
rdtsc library: Binding for the rdtsc machine instruction
readline library: An interface to the GNU readline library
riot program: Riot is an Information Organisation Tool
safe-lazy-io library: A library providing safe lazy IO features.
serial library: POSIX serial port wrapper
setlocale library: A Haskell interface to setlocale()
shana library: treat haskell functions as unix pipes
shell-pipe library and programs: Pipe streams through external shell commands
simpleargs library: Provides a more flexible getArgs function with better error reporting.
srcinst program: Build and install Debian packages completely from source
strict library: Strict data types and String IO.
strict-io library: A library wrapping standard IO modules to provide strict IO.
strptime library: Efficient parsing of LocalTime using a binding to C's strptime
system-uuid library and program: Bindings to system UUID functions.
tabloid program: View the output of shell commands in a table
threadPool program: Runs other programs in the manner of a thread pool
time library: A time library
time-extras library: Data instances for the time package
timeit library: Time a computation
uacpid program: Userspace Advanced Configuration and Power Interface event daemon
unicode-prelude library: Unicode notation for some definitions in Prelude
unix library: POSIX functionality
unix-compat library: Portable POSIX-compatibility layer.
unix-pty-light library: POSIX pseudo-terminal support
Unixutils library: A crude interface between Haskell and Unix-like operating systems
usb library: Communicate with USB devices
usb-id-database library and program: A database of USB identifiers
usb-safe library: Type-safe communication with USB devices.
utf8-env library: UTF-8 aware substitutes for functions in System.Environment
utf8-prelude library and program: Variants of Prelude and System.IO with UTF8 text I/O operations
whim library and program: A Haskell window manager
Win32 library: A binding to part of the Win32 library
Win32-notify library: A binding to part of the Win32 library for file notification
winio library: I/O library for Windows
xattr library: Haskell bindings to libattr
xdg-basedir library: A basic implementation of the XDG Base Directory specification.
XInput library: Bindings for the DirectX XInput library.
xmobar program: A Minimalistic Text Based Status Bar
xmonad program: A tiling window manager
xmonad-bluetilebranch program: A tiling window manager
xmonad-contrib library: Third party extensions for xmonad
xmonad-contrib-bluetilebranch library: Third party extensions for xmonad
xmonad-eval library: Module for evaluation Haskell expressions in the running xmonad instance
xmonad-extras library: Third party extensions for xmonad with wacky dependencies
xmonad-utils programs: A small collection of X utilities
zoneinfo library: ZoneInfo library.
ztail program: Multi-file, colored, filtered log tailer.

System.Console

parseargs library and program: Command-line argument parsing library for Haskell programs

Template Haskell

multirec-alt-deriver library: Alternative multirec instances deriver
th-expand-syns library: Expands type synonyms in Template Haskell ASTs

Test

hpc-tracer program: Tracer with AJAX interface

Testing

benchpress library: Micro-benchmarking with detailed statistics.
cabal-test program: Automated test tool for cabal projects.
ChasingBottoms library: For testing partial and infinite values.
checkers library: Check properties on standard classes and data structures.
complexity library: Empirical algorithmic complexity
criterion library: Robust, reliable performance measurement and analysis
darcs-benchmark program: Comparative benchmark suite for darcs.
DocTest program: Test interactive Haskell examples
HTF library and program: The Haskell Test Framework
HUnit library and programs: A unit testing framework for Haskell
hunit-gui library and program: A GUI testrunner for HUnit
IOSpec library: A pure specification of the IO monad.
lazysmallcheck library: A library for demand-driven testing of Haskell programs
pqc library: Parallel batch driver for QuickCheck
QuickCheck library: Automatic testing of Haskell programs
quickcheck-poly library: Automating QuickCheck for polymorphic and overlaoded properties
quickcheck-script program: Automated test tool for QuickCheck.
shelltestrunner program: A tool for testing command-line programs.
smallcheck library: Another lightweight testing library in Haskell.
StrictBench library: Benchmarking code through strict evaluation
TBC library and program: Testing By Convention
test-framework library and program: Framework for running and organising tests, with HUnit and QuickCheck support
test-framework-hunit library: HUnit support for the test-framework package.
test-framework-quickcheck library: QuickCheck support for the test-framework package.
test-framework-quickcheck2 library: QuickCheck2 support for the test-framework package.
testpack library: Test Utililty Pack for HUnit and QuickCheck
testrunner library: Easy unit test driver framework
torch library: Simple unit test library (or framework)

Text

ansi-wl-pprint library and program: The Wadler/Leijen Pretty Printer for colored ANSI terminal output
arff library: Generate Attribute-Relation File Format (ARFF) files
attoparsec library: Fast combinator parsing with Data.ByteString.Lazy
augur program: Renaming media collections in a breeze.
beautifHOL program: A pretty-printer for higher-order logic
bencode library: Parser and printer for bencoded data.
bibtex library and program: Parse, format and processing BibTeX files
Bookshelf program: A simple document organizer with some wiki functionality
boxes library: 2D text pretty-printing library
bytestring-nums library and program: Parse numeric literals from ByteStrings.
bytestring-show library: Efficient conversion of values into readable byte strings.
bytestringparser library: Combinator parsing with Data.ByteString.Lazy
bytestringparser-temporary library: Combinator parsing with Data.ByteString.Lazy
bytestringreadp library: A ReadP style parser library for ByteString
cedict library and program: Convenient Chinese phrase & character lookup.
change-monger library and program: Parse VCS changelogs into ChangeLogs
chunks library: Simple template library with static safety
citeproc-hs library: A Citation Style Language implementation in Haskell
clevercss library and program: A CSS preprocessor
csv library: CSV loader and dumper
data-object-json library: Serialize JSON data to/from Haskell using the data-object library.
dotgen library and program: A simple interface for building .dot graph files.
ehaskell program: like eruby, ehaskell is embedded haskell.
email-validate library: Validating an email address string against RFC 5322
Encode library and programs: Encoding character data
feed library: Interfacing with RSS (v 0.9x, 2.x, 1.0) + Atom feeds.
feed-cli program: A simple command line interface for creating and updating feeds like RSS
Flippi program: Wiki
flow2dot library and program: Library and binary to generate sequence/flow diagrams from plain text source
formlets library: Formlets implemented in Haskell
graphtype program: A simple tool to illustrate dependencies between Haskell types
hack-contrib-press library: Hack helper that renders Press templates
hakyll library: A simple static site generator library.
HaXml library and programs: Utilities for manipulating XML documents
hexdump library: A library for forming hexdumps.
hgettext library and program: Bindings to libintl.h (gettext, bindtextdomain)
highlighting-kate library and program: Syntax highlighting
hjpath library: XPath-like syntax for querying JSON
hmarkup library: Simple wikitext-like markup format implementation.
hprotoc program: Parse Google Protocol Buffer specifications
hs-bibutils library: Haskell bindings to bibutils, the bibliography conversion utilities.
HsHyperEstraier library: HyperEstraier binding for Haskell
HsSyck library: Fast, lightweight YAML loader and dumper
hstidy program: Takes haskell source on stdin, parses it, then prettyprints it to stdout.
HStringTemplate library: StringTemplate implementation in Haskell.
HStringTemplateHelpers library: Convenience functions and instances for HStringTemplate
html-minimalist library: Minimalist haskell html library
hyphenate library: Text hyphenation algorithm
i18n library: Internationalization for Haskell
iCalendar library: Parser for iCalendar format (RFC2445)
iconv library: String encoding conversion
idiii library: ID3v2 tag editing-suite
idna library: Implements IDNA (RFC 3490).
Interpolation library: Multiline strings, interpolation and templating.
ipprint library: Tiny helper for pretty-printing values in ghci console
json-b library and program: JSON parser that uses byte strings.
ldif library and program: The LDAP Data Interchange Format (LDIF) parser
liboleg library: A collection of Oleg Kiselyov's Haskell modules (2009-2008)
libxslt library: Binding to libxslt
line2pdf library and program: Simple command-line utility to convert text into PDF
maccatcher library and program: Obtain the host MAC address on *NIX and Windows.
magic library: Interface to C file/magic library
marked-pretty library and program: Pretty-printing library, with scoping, based on pretty-1.0.0.0
mime-directory library: A library for parsing/printing the text/directory mime type.
mpppc library: Multi-dimensional parametric pretty-printer with color
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
numerals library: Utilities for working with numerals
opml library: Representing and handling OPML subscription information.
PageIO library and program: Page-oriented extraction and composition library
pandoc programs: Conversion between markup formats
PCLT library: Extension to Show: templating, catalogizing, languages, parameters, etc.
pcre-light library: A small, efficient and portable regex library for Perl 5 compatible regular expressions
pdf2line programs: Simple command-line utility to convert PDF into text
phonetic-code library: Phonetic codes: Soundex and Phonix
polyparse library: A variety of alternative parser combinator libraries.
press library: Text template library targeted at the web / HTML generation
pretty library: Pretty-printing library
pretty-ncols library: A implementation of multi-column layout w/ Text.PrettyPrint
pretty-show library and program: Tools for working with derived Show instances.
prettyclass library: Pretty printing class similar to Show.
printf-mauke library: A Perl printf like formatter.
protocol-buffers library: Parse Google Protocol Buffer specifications
protocol-buffers-descriptor library: Text.DescriptorProto.Options and Google Protocol Buffer specifications
pugs-hsregex library: Haskell PCRE binding
pugs-HsSyck library: Fast, lightweight YAML loader and dumper
regex-base library: Replaces/Enhances Text.Regex
regex-compat library: Replaces/Enhances Text.Regex
regex-dfa library: Replaces/Enhances Text.Regex
regex-parsec library: Replaces/Enhances Text.Regex
regex-pcre library: Replaces/Enhances Text.Regex
regex-pcre-builtin library: Replaces/Enhances Text.Regex
regex-posix library: Replaces/Enhances Text.Regex
regex-posix-unittest program: Unit tests for the plaform's Posix regex library
regex-tdfa library: Replaces/Enhances Text.Regex
regex-tdfa-utf8 library: ...
regex-tre library: Replaces/Enhances Text.Regex
regex-xmlschema library: A regular expression library for W3C XML Schema regular expressions
regexpr library: regular expression like Perl/Ruby in Haskell
regexpr-symbolic library: Regular expressions via symbolic manipulation
regexqq library: A quasiquoter for PCRE regexes.
repr library: Render overloaded expressions to their textual representation.
RJson library: A reflective JSON serializer/parser.
rss library: A library for generating RSS 2.0 feeds.
sphinx library: Haskell bindings to the Sphinx full-text searching deamon.
sphinx-cli program: Sphinx CLI and demo of Haskell Sphinx library
spreadsheet library: Read and write spreadsheets from and to CSV files in a lazy way
stemmer library: Haskell bindings to the Snowball stemming library.
stringsearch library
tabular library: Two-dimensional data tables with rendering functions
template library: Simple string substitution
texmath library and programs: Conversion of LaTeX math formulas to MathML.
text library: An efficient packed Unicode text type
text-icu library: Bindings to the ICU library
txt-sushi library and programs: Spreadsheets are databases!
uhexdump program: hex dumper for UTF-8 text
unicode-names library: Unicode 3.2.0 character names
unicode-normalization library: Unicode normalization using the ICU library
unicode-properties library: Unicode 3.2.0 character properties
uri library: Library for working with URIs
validate library: Validate
vcard library: A library for parsing/printing vCards from/to various formats.
wavesurfer library: Parse WaveSurfer files
wcwidth library and program: Native wcwidth.
wl-pprint library: The Wadler/Leijen Pretty Printer
WordNet library: Haskell interface to the WordNet database
xformat library: Extensible, type-safe formatting with scanf- and printf-like functions
xhtml library: An XHTML combinator library
xml library: A simple XML library.
xslt library: Binding to libxslt
YamlReference library and programs: YAML reference implementation
yeganesh program: small dmenu wrapper
yst program: Builds a static website from templates and data in YAML or CSV files.
yuuko library and program: A transcendental HTML parser gently wrapping the HXT library

Text.ParserCombinators Parsing Text

uu-parsinglib library: New version of the Utrecht University parser combinator library

Theorem Provers

bindings-yices library: Bindings to the Yices theorem prover
dedukti library and program: A type-checker for the λΠ-modulo calculus.
ivor library: Theorem proving library based on dependent type theory
logic-TPTP library: Import, export etc. for TPTP, a syntax for first-order logic
pesca program: Proof Editor for Sequent Calculus

Trace

ghc-events library and program: Library and tool for parsing .eventlog files from GHC
hpc-strobe library: Hpc-generated strobes for a running Haskell program
hpc-tracer program: Tracer with AJAX interface

UI

WL500gPControl programs: A simple command line tools to control the Asus WL500gP router

User Interfaces

ansi-terminal library and program: Simple ANSI terminal support, with Windows compatibility
ansi-wl-pprint library and program: The Wadler/Leijen Pretty Printer for colored ANSI terminal output
concurrentoutput library: Ungarble output from several threads
editline library: Bindings to the editline library (libedit).
fenfire programs: Graph-based notetaking system
formlets library: Formlets implemented in Haskell
grapefruit-examples library: Examples using the Grapefruit library
grapefruit-ui library: Declarative user interface programming
grapefruit-ui-gtk library: GTK+-based backend for declarative user interface programming
GtkTV library: Gtk-based GUIs for Tangible Values
GuiTV library: GUIs for Tangible Values
Hashell program: Simple shell written in Haskell
haskeline library: A command-line interface for user input, written in Haskell.
haskeline-class library: Class interface for working with Haskeline
HCL library and program: High-level library for building command line interfaces.
hs-fltk library: Binding to GUI library FLTK
nanocurses library: Simple Curses binding
phooey library: Functional user interfaces
progress library: Simple progress tracking & projection library
proplang library: A library for functional GUI development
Shellac library: A framework for creating shell envinronments
Shellac-compatline library: "compatline" backend module for Shellac
Shellac-editline library: Editline backend module for Shellac
Shellac-haskeline library: Haskeline backend module for Shellac
Shellac-readline library: Readline backend module for Shellac
terminfo library: Haskell bindings to the terminfo library.
vty library: A simple terminal access library
vty-ui library and program: A user interface composition library for Vty
wx library: wxHaskell
wxcore library: wxHaskell core
wxdirect library and program: helper tool for building wxHaskell
xtc library: eXtended & Typed Controls for wxHaskell.
zipedit library: Create simple list editor interfaces

User-interface

hscurses library: NCurses bindings for Haskell

Utility

gnome-desktop program: Randomly set a picture as the GNOME desktop background

Utils

bluetileutils program: Utilities for Bluetile
hp2any-core library: Heap profiling helper library
hp2any-graph library and programs: ...
hp2any-manager program: A utility to visialise and compare heap profiles.
htags program: A Haskell98 parsing tags program similar to ctags.
hunp program: Unpacker tool with DWIM
jarfind program: Tool for searching java classes, members and fields in classfiles and JAR archives
modsplit library and program: Haskell source splitter driven by special comments.
OSM library: Parse OpenStreetMap files
PastePipe program: CLI for pasting to hpaste.org
Printf-TH library
readline-statevar library: Readline with variables (setX/getY) wrapped in state vars
sorty program: Sort lines per file size
subtitles program: Modify SRT subtitle files.
txt-sushi library and programs: Spreadsheets are databases!

Web

authenticate library: Authentication methods for Haskell web applications.
bamboo library: A simple blog engine on Hack
bamboo-launcher program: bamboo-launcher
bamboo-plugin-highlight library: A highlight middleware
bamboo-plugin-photo library: A photo album middleware
bamboo-theme-blueprint library: bamboo blueprint theme
bamboo-theme-mini-html5 library: bamboo mini html5 theme
Bitly library and program: A library and a command line tool to access bit.ly URL shortener.
blogination library and program: Very simple static blog software
BlogLiterately program: A tool for posting Haskelly articles to blogs
botpp library and program: Build tool for Lambdabot
clientsession library: Store session data in a cookie.
DarcsHelpers library: Code used by Patch-Shack that seemed sensible to open for reusability
data-object-yaml program: Support for serialising Haskell to and from Yaml.
delicious library: Accessing the del.icio.us APIs from Haskell (v2)
dgs library: Haskell front-end for DGS' bot interface
DOM library: DOM Level 2 bindings for the WebBits package.
esotericbot library and program: Esotericbot is a sophisticated, lightweight IRC bot.
fckeditor library: Server-Side Integration for FCKeditor
feed-cli program: A simple command line interface for creating and updating feeds like RSS
feed2lj program: Cross-post any RSS/Atom feed to LiveJournal
feed2twitter library and program: Send posts from a feed to Twitter
FermatsLastMargin program: Annotate ps and pdf documents
ffeed library and programs: Haskell binding to the FriendFeed API
Finance-Quote-Yahoo library: Obtain quote data from finance.yahoo.com
Finance-Treasury library: Obtain Treasury yield curve data
flickr library and programs: Haskell binding to the Flickr API
formlets library: Formlets implemented in Haskell
freesound library and program: Access the Freesound Project database
hack library: a Haskell Webserver Interface
hack-contrib library: Hack contrib
hack-contrib-press library: Hack helper that renders Press templates
hack-frontend-happstack library: hack-frontend-happstack
hack-frontend-monadcgi library: Allows programs written against MonadCGI to run with any hack handler.
hack-handler-cgi library: Hack handler using CGI protocol.
hack-handler-evhttp library: Hack EvHTTP (libevent) Handler
hack-handler-fastcgi library: Hack handler direct to fastcgi
hack-handler-happstack library: Hack Happstack server handler
hack-handler-hyena library: Hyena hack handler
hack-handler-kibro library: Hack Kibro handler
hack-handler-simpleserver library: A simplistic HTTP server handler for Hack.
hack-middleware-cleanpath library: Applies some basic redirect rules to get cleaner paths.
hack-middleware-clientsession library: Middleware for easily keeping session data in client cookies.
hack-middleware-gzip library: Automatic gzip compression of responses.
hack-middleware-jsonp library: Automatic wrapping of JSON responses to convert into JSONP.
hackage2twitter program: Send new Hackage releases to Twitter
HAppS-Data library: HAppS data manipulation libraries
happs-hsp-template library: Utilities for using HSP templates in HAppS applications.
HAppS-IxSet library
HAppS-Server library: Web related tools and services.
HAppS-State library: Event-based distributed state.
happs-tutorial program: A Happstack Tutorial that is its own web 2.0-type demo.
HAppS-Util library: Web framework
happstack library and programs: The haskell application server stack + code generation
happstack-contrib library and program: Web related tools and services.
happstack-data library and program: Happstack data manipulation libraries
happstack-facebook library and program: A package for building Facebook applications using Happstack
happstack-fastcgi library: Happstack extension for use with FastCGI.
happstack-ixset library and program: Efficient relational queries on Haskell sets.
happstack-server library and program: Web related tools and services.
happstack-state library and program: Event-based distributed state.
happstack-util library and program: Web framework
haste program: A universal pastebin tool, written in Haskell.
hcheat library: A collection of code cheatsheet
HJScript library: HJScript is a Haskell EDSL for writing JavaScript programs.
hlongurl library and program: Library and utility interfacing to longurl.org
hpaste program: An online pastebin, written in Haskell.
hs-twitter library: Haskell binding to the Twitter API
hS3 library and program: Interface to Amazon's Simple Storage Service (S3)
hSimpleDB library: Interface to Amazon's SimpleDB service.
hsp library: Haskell Server Pages is a library for writing dynamic server-side web pages.
hsp-cgi library: Facilitates running Haskell Server Pages web pages as CGI programs.
hsx-xhtml library: XHTML utilities to use together with HSX.
html library: HTML combinator library
httpd-shed library and program: A simple web-server with an interact style API
hxweb library: Minimal webframework using fastcgi, libxml2 and libxslt.
json library: Support for serialising Haskell to and from JSON
json2yaml program: Utility to convert a file from JSON to YAML format.
kibro library and program: Web development framework.
lambdabot program: Lambdabot is a development tool and advanced IRC bot
lambdabot-utils library: Utility libraries for the advanced IRC bot, Lambdabot
lambdaFeed program: RSS 2.0 feed generator
lighttpd-conf library: Lighttpd configuration file tools.
lighttpd-conf-qq library: A QuasiQuoter for lighttpd configuration files.
loli library: A minimum web dev DSL in Haskell
mahoro program: ImageBoards to XMPP gate
maid program: A simple static web server
mediawiki library and programs: Interfacing with the MediaWiki API
moe library: html with style
mohws library and programs: Modular Haskell Web Server
nemesis library and program: a Rake like task management tool
nikepub program: Command line utility publishes Nike+ runs on blogs and Twitter
opml library: Representing and handling OPML subscription information.
orchid library: Haskell Wiki Library
orchid-demo program: Haskell Wiki Demo
panda library: A simple static blog engine
press library: Text template library targeted at the web / HTML generation
primula-board program: ImageBoard on Happstack and HSP
primula-bot program: Jabber-bot for primula-board ImageBoard
pubsub library and programs: A library for Google/SixApart pubsub hub interaction
redHandlers library: Monadic HTTP request handlers combinators to build a standalone web apps.
RESTng library: A framework for writing RESTful applications.
salvia library: Lightweight Haskell Web Server Framework
salvia-extras library: Collection of non-fundamental request handler for the Salvia web server.
selenium library: Test web applications through a browser.
shpider library: Web automation library in Haskell.
smartword programs: Web based flash card for Word Smart I and II vocabularies
spata library: bruteforce form validation
TinyURL library: Use TinyURL to compress URLs
uri-template library and program: URI template library for Haskell
url library: A library for working with URLs.
UrlDisp library: Url dispatcher. Helps to retain friendly URLs in web applications.
urlencoded library and program: Generate or process x-www-urlencoded data
URLT library: Library for maintaining correctness of URLs within an application.
validate library: Validate
web-encodings program: Encapsulate multiple web encoding in a single package.
windowslive library and program: Implements Windows Live Web Authentication and Delegated Authentication
yahoo-web-search library: Yahoo Web Search Services
yaml library: Support for serialising Haskell to and from Yaml.
yuiGrid library: Grids defined by layout hints and implemented on top of Yahoo grids.

Workflow

Workflow library: library for transparent execution of interruptible computations

XML

formlets library: Formlets implemented in Haskell
generic-xml library: Marshalling Haskell values to/from XML
HaXml library and programs: Utilities for manipulating XML documents
hexpat library: wrapper for expat, the fast XML parser
hexpat-pickle library: XML picklers based on hexpat, source-code-similar to those of the HXT package
HXQ library and program: A Compiler from XQuery to Haskell
hxt library: A collection of tools for processing XML with Haskell.
hxt-extras library: Extra functions for HXT
hxt-filter library: A collection of tools for processing XML with Haskell (Filter variant).
libxml library: Binding to libxml2
libxml-sax library: Bindings for the libXML2 SAX interface
libxslt library: Binding to libxslt
musicxml library: MusicXML format encoded as Haskell type and functions of reading and writting.
plist library: Generate and parse Mac OX property list format
property-list library: XML property list parser
pxsl-tools program: Parsimonious XML Shorthand Language--to-XML compiler
regular-xmlpickler library: Generic generation of HXT XmlPickler instances using Regular.
tagchup library and programs: alternative package for processing of tag soups
tagsoup library and program: Parsing and extracting information from (possibly malformed) HTML documents
tagsoup-ht library and programs: alternative parser for the tagsoup package
tagsoup-parsec library: Tokenizes Tag, so [ Tag ] can be used as parser input.
wraxml library and program: Lazy wrapper to HaXML, HXT, TagSoup via custom XML tree structure
xml library: A simple XML library.
xml-basic library: Basics for XML/HTML representation and processing

Unclassified

backdropper library and program: Rotates backdrops for X11 displays using Imagemagic.
base library: Basic libraries
base-unicode-symbols library: Unicode alternatives for common functions and operators
calc program: A small compiler for arithmetic expressions.
DBus library: DBus bindings
Extra library: A grab bag of modules.
happs-hsp library
hask-home programs: Generate homepages for cabal packages
haskell98 library: Compatibility with Haskell 98
Hmpf program: An MPD client designed for a Home Theatre PC
hnop program
hsConfigure library: By using this package, you can make application configurable.
infinity program
LambdaINet program: Graphical Interaction Net Evaluator for Optimal Evaluation
metaplug library: a tiny ghc api wrapper
MissingH library and program: Large utility library
MissingPy library: Haskell interface to Python
obdd library: Ordered Reduced Binary Decision Diagrams
photoname program: Rename JPEG photo files based on shoot date
pointfree program: Pointfree refactoring tool
safe library: Library for safe (pattern match free) functions
satchmo-backends library: driver for external satchmo backends
satchmo-minisat library: minisat driver as backend for satchmo
strictify program: Find a local optimum of strictness annotations.
Theora library
timberc program: The Timber Compiler.
yjtools library: some tools for Monad, List, Tuple and so on.

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