Confluence - Confluence is content collaboration software that changes how modern teams work
Xmind - Xmind is a brainstorming and mind mapping application.
Slack - A messaging app for teams who see through the Earth!
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Yammer - Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.