Collaborative web-based mind mapping tool with instant updates, real-time collaboration, and auto-layout technology.
An overlooked mindmap solution
Pros: Horizontal tree
Create meeting presentations
Export and import in many formats, including OPML
Windows or Mac
Cons: Can't auto-merge offline work back to online database
Only one user per account
No free "basic" account
Overall: More satisfying to use for planning and outlining than a radial mind-mapping solution.