Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Hive - Seamless project management and collaboration for your team.
Cube 2 (Sauerbraten) - FPS game and engine
Sup! Standup Bot - The complete stand-up and follow-up bot
Krunker.io - Krunker.io is a free io Multiplayer First Person Shooter. No Download browser FPS! Free!
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.