JFDraw is a Java vector graphics drawing
application and library package. It is focused on
vector graph drawing field. It is useful for
mechanical, electronic, architectural graph
drawing applications, or even business process or
2DPathfinder is a very fast C library that
performs A-Star pathfinding in 2d maps. It's
highly portable and easy to use.
A compression library for lzip files
An application for tagging your files and navigating them as a virtual filesystem.