Freshmeat page: http://freshmeat.net/projects/mhash/
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, and other signatures. The HMAC support implements the basics for message authentication, following RFC 2104.
This project has the following developers:
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!