Engadget has a list of 12 companies that it claims are all among Valves official Steam Machine hardware partners. According to the publication, usual suspects like Alienware, Falcon Northwest, and Origin PC are all on the list, as well as Gigabyte, CyberPowerPC, Zotac, Next, Webhallen, Alternate, Materiel.net, and Scan Computers. Engadget writes that the list may not be complete and other third-party companies may announce their own Steam Machines as well. Last we heard, Valve expected Steam Machines to ship in the second half of 2014.