Hardware compatibility for Linux
Hardware4Linux.info

get_iplayer – Download streaming media
Linuxcentre

Ubuntu (Jaunty) reference and howto's
ubuntuguide.org

Inkscape – Vector drawing software
Inkscape.org

Scribus Open Source Desktop Publishing
Scribus.net

Alternatives to Windows, Mac, Linux and online applications
AlternativeTo.net

Instant Software Installation | OzOS
apt:foo

Southend Linux Wiki Site
Soslug.org/wiki

The Universal Operating System
Debian.org

Opensource projects version control
Launchpad.net