Retro is a clean, minimalist language with roots in Forth. It supports all major OSes in use today, and was designed to be easy to learn, use, and modify for specific needs.
UFO2000 is a multi-playable remake of
Microprose's X-COM: UFO Defense that uses
the Allegro game programming library. It can use the data files from original game, but does not require them.
Protocol Buffers for R6RS Scheme.
A Grails 2 tag library that provides useful social media tags to include in Web pages.