FreeMind is a premier free mind-mapping software written in Java.
FreeMind can be used for the following purposes:

• Keeping track of projects, including subtasks, state of subtasks and time recording
• Project workplace, including links to necessary files, executables, source of information and of course information
• Workplace for internet research using Google and other sources
• Knowledge base – Keeping a collection of expanding notes with links.
• Essay writing and brainstorming.
• Keeping a small database.
• Commented internet favorites or bookmarks, with colors and fonts.

• Fully functional following of HTML links stored in the nodes.
• Freemind supports folding.
• Fast one-click navigation, including folding / unfolding on one click.
• Smart Drag n Drop.
• Smart copying and pasting, including links from HTML,
• Export of map to HTML, with folding.