urlcheck: a multithreaded, parallel url checker Features: urlcheck is lightweight, concurrent url checker. It uses minimal resources, and is multicore-capable. In contrast to popular link checkers, it uses few resources, will readily take advantage of multiple cores, and is easily killable. An example: $ urlcheck content.wiki Found 0 broken links. Checked 31 links (31 unique) in 1 file. Search time: 30 secs Building: runhaskell Setup.lhs configure --prefix=/home/dons runhaskell Setup.lhs build runhaskell Setup.lhs install Use: $ urlcheck --help Usage: checkuri [-h] [-n n] [file ...] -h --help Show this help message -n N Number of concurrent connections (default 16) urlcheck takes a list of files to check on the command line. It uses 16 concurrent threads by default. You can configure these threads to use multiple cores, with GHC 6.6, by setting: +RTS -N 16 -RTS on the command line arguments to urlcheck.