Zenkit - Zenkit is the home you always wanted for your ideas, your projects, your business.
Xmind - Xmind is a brainstorming and mind mapping application.
Webuzo - Webuzo Application Manager
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.