These are sites where you can find Free software, plus some toys...
GNU.org, home of the Free Software Foundation and and the GNU tools, toolset of every free OS I can think of.
RedHat Linux is my distribution of choice. I have used it for over 3 years and am comfy with it.
Get the latest, Free, software.
SourceForge provides free hosting and CVS for Free software projects.
Get a code snippet, or a web-app in C/C++, Java, Perl.
Themes for Xwindow managers, Enlightenment, GTK+, Sawfish, KWM, Windowmaker ... ...