FreeMindFreeMind is completely free. It has made some great progress in recent years. Tips:
- Switch on “Format → Automatic Layout” in the menu bar. It formats the mind map nicely.
- The default is for nodes to be selected on hover. I prefer having to click to select a node. This behavior can be enabled via “Preferences → Behavior → Selection Method → By Click”.
- Check out the shortcuts in the “Insert” and “Navigate” menus. They really speed up mind map creation.