Starfall - You are a fallen star, catch the glows and avoid black holes to run back home! - FrancescoBonizzi/StarfallGame
ZenHub - ZenHub is how the world's best software teams work together. Trusted by NASA, Docker, and Rackspace. Start free today!
Scrimba - Interactive coding screencasts created in an instant
Nifty - Manage projects, work, and communications in one place.
Laracasts - Laracasts is the PHP and Laravel screencasts on the web.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.