Chess Database and Toolkit program
"Shane's Chess Information Database" is a huge chess toolkit with extensive database, analysis and chess-playing features. Scid vs. PC is a usability and bug-fix fork of Scid. It has extensive interface fixes and improvements, and is fully compatible with Scid's .si4 databases. It's new features include a rewitten Gamelist, a Computer Tournament, and FICS, Tree and Book improvements.
xmorph/morph/gtkmorph: image warping and dissolving (morphing) programs
A simulated Artificial Intelligence IRC script for use with Eggdrop with many options and features and high configurability, multi-language support, grammar checker, and now with theme support! Database support is up-coming.