NoteBookCast - A real time shared whiteboard in your browser, teach, explain, sketch. For work, study, fun.
Xmind - Xmind is a brainstorming and mind mapping application.
Twiddla - Mark up websites, graphics, and photos, or start brainstorming on a blank canvas.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Coccinella - Coccinella is a free and open-source cross-platform instant messaging client with a built-in...
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.