Steam Greenlight has been updated today, adding the ability for developers to post non-gaming software for consideration by the Community. Software in Steam Greenlight will work just like games, where Valve is looking to the community to provide data on what they would like to see made available via Steam.
Launched on August 30, Greenlight allows developers and publishers to post information and media about their game or application in an effort to convince Community members that their work should be released on Steam.
For more details and to vote on submitted software, go here.
Source: Steam Powered