@hackage BerkeleyDB0.2

Provides Haskell bindings for Berkeley DB v1.x, a simple file-backed database library which is included by default with many UNIX distributions. Databases may be organized in one of four methods: in a hashtable, in a b-tree, in a stream of fixed-length records, and in a stream of variable-length records. Custom comparison and hash functions are supported. Most of the standard database API is supported.

This implementation *seems* stable, inasmuch as I don't know of any glaring flaws, but I haven't done anything that could even jokingly be referred to as coverage testing.