What are some alternatives?
When comparing Ranktab and XMind, you can also consider the following products
IdeaScale - IdeaScale is the leading innovation management software platform for the enterprise, government, and education.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Viima - Viima's mission is to allow companies to build what their customer wants, or in turn to fail faster with minimal wasted effort
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
Crowdicity - Idea management software for smart organizations.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.