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.
Github Profile Visualizer - Tool for visualizing GitHub profiles
GoodGantt - The best Gantt chart for Trello®
GitHub Visualizer - Enter user/repo and see the project visually
Paws for Trello - The best way to use Trello on your desktop
The GitHub Matrix Screensaver - Latest commits from GitHub visualized Matrix-style