Workzone - Workzone is a web-based project management software.
Firepoker - Agile Planning Poker powered by Firebase and AngularJS
Milestone Planner - Visual project planning tool. Powerfully simple. Quickly build and share professional milestone plans on-line to track deliverables - Free sign up.
Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).
Xebrio - A Project Management Software to Fulfill Your Story From Requirements to Deployment.
Taiga - Project management platform for agile developers & designers