GLUT is the OpenGL Utility Toolkit, a popular windowing library for
writing portable OpenGL graphics demos and programs.
The newer files are:
glut-3.5.IAFA         Description of GLUT 3.5 package.
glut-3.5.tar.gz       gzip'ed, tar'ed GLUT 3.5 source code distribution
glut35.zip            PC zip'ed version of GLUT 3.5 source code distribution
glut_data-3.5.tar.gz  gzip'ed, tar'ed GLUT 3.5 data files (optional)
glutdlls.zip          Pre-compiled GLUT DLLs for Windows 95 and NT


The glut-3.spec.ps.gz and the glut.column1.ps.gz are Postscript files, and 
are current for both versions.

The single GLUT distribution now compiles for both Win32 and X11 platforms.

If you want more info about what GLUT is and does, see:
  http://reality.sgi.com/mjk_asd/glut3/glut3.html