Xmind - Xmind is a brainstorming and mind mapping application.
Noor - Chat like you're in the office together
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Commons - Private Clubhouse for your team to collaborate and connect
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
Angle Audio - Live audio conversations as a service