OpenOffice.org
A free office suite for Windows, Linux and other OS's.
VNC
An open source thin-client and server package for remote control of Windows or Unix/Linux
systems.
Free Oldies
A site with classic, but free computer games.
Linux Terminal Server Project (LTSP)
LTSP is an add-on package for Linux that allows you to connect lots of low-powered thin client terminals to a Linux server. Applications typically run on the server, and accept input and display their output on the thin client display.