Open Source

• Source Forge
• Gamelan
• O'Reilly Net (very cool!)
• Developer Shed (looks quite good)
• Open Source Digest

Linux

• Linux From Scratch
• Linux-Mandrake
• Gentoo Linux
• Sorceror GNU Linux
• Distro Watch
• Linux Software (Big)
• YoLinux Tutorials
• The Linux Show
• Linux Tutorial (lots o' newb-type stuff)
• Linux games - hey, it could happen!
• Equivalent Software - pretty cool!
• Debian
  • Debian.org
  • Debian Planet
  • the Google Search Groups