Cad
Lunix - the linux cad shrine
http://www.tech-edv.co.at/lunix/CADlinks.html
Freshmeat
Freshmeat maintains the web's largest index of unix and cross-platform open source software. thousands of applications are meticulously cataloged in the freshmeat database, and links to new code are added daily.
http://freshmeat.net/
Linuxapps.com
Linuxapps.com
http://www.linuxapps.com/
Rpmfind
Rpmfind
http://www.rpmfind.net/
Rpmseek
Rpmseek
http://www.rpmseek.com/
School Lan (netwerk Sw)
School Lan (netwerk Sw)
http://www.schoollan.nl/
The Linux Kernel Archives
The Linux Kernel Archives
http://www.kernel.org/