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.

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

Steam Community and News Portal

SteamCard is a simple way to display your stats from the Steam Community, just like a Live! Gamercard. SteamCards are just PNG images, which means you can embed them into forums, signatures etc. Different styles of SteamCard are avaliable so you can stand out from the crowd.

SteamPowered is the home of Steam, a digital distribution platform. The website offers visitors the ability to buy and download games, interactive with other Steam users.

The Cake Is A Pie is a video-blogging site dedicated to reviewing the latest in the Portal community – particularly custom mapping.

The Half-Life Saga Story Guide was created in order to provide a concise, accurate, user-friendly overview of the events dealing directly with the events of the Half-Life Saga, and allowing users to easily get a better understanding of the story behind the games. It was written by Chan Karunamuni, with lots of help from contributions [...]

The Snarkpit has been online since 2001, making it one of the longest running websites that covers Valve’s games. It has had a number of redesigns over the years and always adds new features.

The Whole Half-Life AKA TWHL is first and foremost a community of mappers and modders. It has very active forums and plenty of tutorials.

Thinking With Portals is a website dedicated to Portal.

TotalHL.hu is a Hungarian Half-Life portal.