I'm pleased to announce the first release of hledger, a command-line accounting tool similar to John Wiegley's c++ ledger. hledger generates
simple ledger-compatible transaction & account balance reports from a plain text ledger file. It's simple to use, at least for techies.

This has been my "learning Haskell" project, but I think it's also useful. It is much less featureful than ledger, and not quite as fast, but it has the virtue of being fun for haskellers to hack on. I am documenting the code, the app is simple, and I'm not too far up the haskell learning curve, so I think other people learning haskell might enjoy a look. It is currently ~1100 lines of haskell excluding tests.