Xmind - Xmind is a brainstorming and mind mapping application.
Firepoker - Agile Planning Poker powered by Firebase and AngularJS
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
Taiga - Project management platform for agile developers & designers