http://www.steampowered.com/v/index.php ... 1423&cc=CAComplete Suite of Publishing Tools Available Free of Charge
January 29, 2008 – Valve, creators of best-selling game franchises (such as Half-Life and Counter-Strike) and leading technologies (such as Steam and Source), today announce Steamworks, a complete suite of publishing and development tools – ranging from copy protection to social networking services to server browsing – is now available free of charge to developers and publishers worldwide.
Steamworks, the same suite of tools used in best-selling PC titles Half-Life 2 and The Orange Box, is available for all PC games distributed via retail and leading online platforms such as Steam. The services included in Steamworks may be used a la carte or in any combination.
I think it's pretty awesome
