Scum Runners
One of the best Scum sites around, with a massive database of downloads, and plenty of tips for map makers.

StarCraft: Infinity
Starcraft Infinity has been around for a while now, and are one of the best SC sites on the net. Dioxide, their head webmaster is famous for his animated graphics, as can be seen in their Gif Wars section. Definitely a site to check out.

Camelot Systems, Inc.
Camelot Systems is an organisation dedicated to providing information and support for those interested in the technical side of RTS games (specifically WarCraft II and StarCraft). This has lead to several projects, including several total conversions for War2, and SCMap Central, a source of technical information about SCM files.

Blizzard StarCraft Compendium
Blizzard's own StarCraft resource, with a ton of strategy, FAQ's, SCM of the week and lots of forums.

StarShack
Strategy, News, and more Strategy. You'll find it all here at the premier StarCraft Strategy Site.

Shafe's StarCraft Source
One of the oldest StarCraft sites around. Always has great news and strategy.

Techbase
Another veteran site, equipped with great news reporters, and home of probably the biggest StarCraft tournament ever.

Starcraft Legacy
A top quality news site, and bitter rivals of Starcraft.Org!

StarHack
A site dedicated to technical information about StarCraft. Currently has server problems and is down on a regular basis.

Starcraft Extreme
Formerly Starcraft Bible, a strategy site, but has now branched out a little. You'll look hard before finding a better resource than this.

StarLadder
The best site on the net for statistics on the battle.net ladder.

RTSGamers
General RTS site, with heavy emphasis on StarCraft. Webmastered by some of SC's top players, including Agent911, TillerMaN, and MogKupo.

The Blizzard Games Consortium
Website with info on all Blizzard games, including some very good SC news.

Everything but Gaming
If you're looking for bizarre and interesting links, amusing stories and jokes, and Shlonglor's opinions on anything and everything (along with his reader responses) check this out.

Here's a listing of some other sites to check out.

Starcraft Infoceptor
Comsat Station
Tender Fury's Suicidal Tendancies
Scum's StarCraft Quck Finder
Scum Federation
Multiplayer Map Archive
Top Secret StarCraft Site
Sector 7
Star Knight
The StarCraft Vault
DarkTemplar.com
The StarCraft Starport
Star Command
StarCraft: Fringewars
Icarus Haven
ScumLand
The StarCraft Center
StarCraft Character Profiles
Croation StarCraft Site
The Official Singapore StarCraft Site
[killa]'s Starcraft Strategy Page
YMacrossY's StarCraft Page
FoRsAkEn GoDs
StarCraft Realm
StarCraft RPG
Project Xenomorph
StarCraft Campain