Adgali is an open source game library useful for 2D games programmation. It
uses the SDL library for the bitmap, sound and events which provides
accelerated and portable interfaces for the video and sound hardware. 

This library tends to provide useful functions for bitmap and sprite display,
game GUI, sound events and music, generic AI engine, network management and
video streaming. 

WWW: http://www.nongnu.org/adgali/