Mod DB is the largest website dedicated to supporting independent development of games

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

Nana’s Paradox covers Source games and runs articles and news about maps and mods.

OzSource is the home of the Australian Gaming Combine. Steam discussion, Community Portal, Gaming news and opinions, critiques, retrospectives. Oz Source has been resurrected from its Half Life 2 Deathmatch origins.

Pájaros de Barro is a Spanish Gaming Community which offers public servers and support (tutorials, videos, forums, articles…) for Team Fortress 2 and Left 4 Dead as well as updated and fully spanish translated news and interviews related to Steam and Source Engine based games.

Podcast 17 is a weekly verbal tour of the Half-Life community. It covers everything related to the Half-Life universe and features lively, informative recordings.

SLUM is Czech Steam community and fan portal about Steam and Valve games.

Source BG is a Bulgarian website focused on the Source community.

Steam Friends covers all the news related to Steam and Valve.

The Survivors Diary Podcast is a weekly podcast about Left 4 Dead where we explore certain features of left 4 dead, as well as talk about community stuff that has been released. They also now cover maps that people have made as well as discuss tactics, suggestions and even glitches for the game. THey hope [...]

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

Team Fortress HQ provides the latest news, articles, skins, maps, sprites, and everything else Team Fortress you can imagine.