- Valve Corporation -- The official homepage
- NZMac Review: Steam -- A (largely) unscored review of the Macintosh version of Steam by NZMac, a New Zealand Apple site (May 17, 2010).
- Steam Community -- Valve's fledgling social network built around the Steam and its Friends & Groups functionality. Also includes Steam and game statistics.
- Valve Developer Community -- A wiki for people developing games or mods using Valve's Source engine.
- Welcome to Steam -- Official Steam website, Valve's online content delivery system
- Wikipedia: Valve Corporation -- article in the open encyclopedia about the company