Open source rocks so it's pleasing to see it go well for Facepunch with s&box. They've now added native Linux binaries for the dedicated server and game client. If you missed the open source news be sure to check the previous GamingOnLinux article.
As a quick reminder on what s&box is — "s&box is a game creation platform built on the Source 2 engine and our spiritual successor to Garry's Mod. Play, create, and share games, explore community creations, and experience endless sandbox fun with powerful modern tools."