Kazlib
- Kazlib is a package of four reusable software modules that provide some frequently-needed functionality. There is a dictionary module based on red-black trees, a hashing module capable of managing hash tables that grow automatically, and a well rounded
- http://users.footprints.net/~kaz/kazlib.html

mhash - Hash Library
- mhash is a thread-safe hash library, implemented in C, and provides a uniform interface to a large number of hash algorithms (MD5, SHA-1, HAVAL, RIPEMD128, RIPEMD160, TIGER, GOST). These algorithms can be used to compute checksums, message digests,
- http://schumann.cx/mhash/