productboard - Beautiful and powerful product management.
Xmind - Xmind is a brainstorming and mind mapping application.
Nifty - Manage projects, work, and communications in one place.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.