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

N00b Salad is an online gaming community, “For the players, by the players”

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

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.

Phenomena On Break is a community brought together by their love of Valve games and games in general. They have used Valve games for over a year to make over one hundred comics based in the Half-Life universe, as well as the use the Source Engine and Gmod to create original universes and characters. They [...]

Planet Fortress is IGN’s portal for all things TF. It is more of a reference site than a regularly updated center.

Planet Half-Life is the daddy of them all. It’s been online longer than most and is generally updated daily.

Play Stuff is a Social, Creative Lounge, for Geeks and Gamers.

Sammy Servers lists servers to play Zombie Master and a few other mods and games.

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

Steambans.com is a global banlist/watchlist made for the Steam technology from Valve. All bans that are accepted will enter a database which then is used to protect all servers under their supervision.