Valve Community

Solid Surf is a site specific to the surfing aspect of CS:S, run by sintax error, and used mainly by the mapping studio solidsurf that he started.

Games On Net is a gaming portal for an Austrailian ISP. It covers lots of games, and has active forums.

Garry’s Mod.de is a German portal focused on Garry’s Mod.

OnlineGame.se is a Scandinavian site that covers Team Fortress 2.

TeamFortress2.fr is a French site that covers the TF2 scene.

DuctTape is a development integration and project building tool for Source Engine modders. Use it to:

• Build outdated files with the press of a button
• Eliminate the need to work with batch files
• Visually create script files, instead of typing them
• Create and compile an SMD into an MDL
• Build soundscape files using an intuitive interface

TF2 Tactics contains downloads, exploits, tutorials, skill videos, tips & tricks and training information for TF2.

TF2 Forum is the center for discussion, game strategy, and resources for Team Fortress 2. You can chat with the community, or take a look at their information sections.

TotalHL.hu is a Hungarian Half-Life portal.

Mods Online is a news and community forum, with a very active user base.

Combine Destiny is the home of the Combine Destiny 1 and 2 mods for Half-Life 2.

The Cinematic Mod (CM) is a Half-Life 2 modification, that adds more details and a darker look to the original Half-Life 2 series.