PlanITpoker - PlanITpoker is a cool on-line planning poker app that helps Agile project teams estimate projects easily.
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.
Firepoker - Agile Planning Poker powered by Firebase and AngularJS
Teamgantt - Intuitive project planning and collaboration. Beautiful Gantt charts, task-level communication, file sharing, resource management and more.
Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).
Basecamp - A simple and elegant project management system.