Xmind - Xmind is a brainstorming and mind mapping application.
Macro.io - A customizable meeting interface, built on top of Zoom
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Covalent - Interactive icebreakers for remote teams
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
Glimpse - Discover trends before they're trending