Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Invision - Prototyping and collaboration for design teams
Quake - Quake is a series of first-person shooter video games released by id Software.
Sketch - Professional digital design for Mac.