XMind - XMind is a brainstorming and mind mapping application.
Mindomo - Easy-to-create and share mind maps, concept maps, task maps and outlines. Mind mapping software for Web, Desktop, iOS and Android. Mind map with us for free!
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.
FreeMind - FreeMind is a premier free mind-mapping software written in Java.
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.