
Facepunch Studios has announced that s&box, the long-in-development successor to Garry's mod, is now open source. "We're awesome," says studio founder Garry Newman, which we'll nod through because they kind of are. "S&box code is on GitHub now (Valve's code is still closed source, we're not open sourcing that)."
s&box has been made open source under the MIT license, and this means developers can basically do whatever they like with it: "You can view, modify, copy any of our code to help improve s&box with pull requests, or maintain your own fork for your standalone games, or even just take the code for your own engine."