FreeMind is a premier free mind-mapping software written in Java. The recent development has hopefully turned it into high productivity tool. We are proud that the operation and navigation of FreeMind is faster than that of MindManager because of one-click "fold / unfold" and "follow link" operations.
Easy-to-use With XMind, you can just double-click to create and edit topics anywhere on the map. Drag-and-drop for reorganizing topics, moving markers, taking a mapshot, and adding attachments.
Thinkbase - a "Visual Wiki" - is based on Freebase , an open, shared database of the world's knowledge. It displays the Freebase contents in an interactive graph which allows the user to visually explore more than 12 million inter-connected topics.