Nifty - Manage projects, work, and communications in one place.
FoldersLint - Directory structure linter for JavaScript projects
ZenHub - ZenHub is how the world's best software teams work together. Trusted by NASA, Docker, and Rackspace. Start free today!
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.
Zube - Project management for developers.
Wondershare PDFelement - All-in-one PDF editor