[ Thanks to linuxaria for this link.
]
“Freemind: This is perhaps one of the most famous software in
this category, FreeMind is a premier free mind-mapping software
written in Java. The developer 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.“You can create nodes with child and sibling nodes and add
icons, clouds, notes and custom formatting for better presentation.
The nodes can be expanded or collapsed, or interactively linked to
local files, other maps, online resources and more. You can also
insert encrypted nodes or create encrypted maps for sesitive
projects. The finished maps can be exported to HTML, clickable
XHTML, Open Office document, image file and other formats.”