Umm is an extremely minimal command-line program to read a plain-text ledger file and report balance and other information. Although minimal, it aims to be able to handle multiple accounts, currencies, commodities, and securities. It doesn't abolutely force you to use double-entry bookkeeping, although it tries to make it easy to do so. Umm should have no dependencies other than a haskell compiler and standard libraries, although I've not tested it with anything except ghc. I've built it with both ghc 6.8.3 on an iMac G3 running OSX 10.3.9 and ghc 6.10.3 on an x86 running Ubuntu. You should be able to build umm simply by running cabal configure && cabal build For more information, build umm, then run "umm --help", and read the output of that. Arguably, that info should be in this file... later. Then look at the two files sample1.dat and sample2.dat; they are very simple examples of ledgers.