Linux Home Page - The main Linux home page.
AfterStep Home Page - AfterStep is a window manager for the X Window System. In my opinion it is the best.
Gtk Home Page - Gtk is a toolkit used for making nice looking X Apps. If you've never heard of it then check it out.
GIMP Home Page - The GNU Image Manipulation Program is a drawing package for X which, in my opinion, is on a par with Adobe Photoshop and it's free.
Linuxberg - This site has an extensive list of Linux and X software in a nice, categorised format.
HappyPenguin.org - A good source for Linux games.
Linux Games - Another good source for Linux Games. They also host several large projects such as MAME.
Adam Hamer - What a God!
James Grimwood - His page contains stuff about Linux and programming and stuff.
WM Dock Apps - Good place to get AS and WM Dock Apps.
eSquire Mailing List Manager - A replacement for Majordomo which uses most of the same commands.