Mesa Homepage The best choice for your OpenGL programs
GLUT Homepage A must have for the beginner.
Independant JPEG Group ftp archive JPEG library
Microsoft OpenGL for Windows 95 Software only OpenGL DLLs
A Space Library Map projections and ... a GREAT Solar System Simulator
Approximate astronomical positions Keith Burnett's homepage
Hitchhiker  App to display the relative motions of the planets in our Solar System.
Shuttle A shuttle simulator
Earth and Moon viewer Interactive views
Björn Jónsson's homepage Probably the best planetary maps/rendering out there
James Hastings-Trew homepage Very nice planetary maps