Freeplane
5.0 5 eek'o'obo' (basado ti' 1 óolnake').
Freeplane is a free, open source software application for creating mind maps (diagrams of connections between ideas), and electronic outlines. Written in Java, it is supported on Windows, Mac OS X and Linux, and is licensed under the GNU GPL version “2 or later”.
This software is trade-free because there are no trackers or advertisements.