Freeplane is a free open-source application for mind mapping, knowledge management and project work. Users build hierarchical maps of ideas, notes and tasks on their desktop, for example to structure a project, explore a topic or organise research. It is written in Java with a Swing interface and is installed as an application on your own computer; no separate cloud service is needed. The documentation is published online and, like the source code, maintained on GitHub.
Freeplane is developed by the Freeplane team, a community without a legal entity of its own. The project moved from SourceForge to GitHub on 30 November 2024. The public profile of its lead developer lists Germany as the location. The licence is GPL-2.0, so you can inspect, modify and run the source code yourself. Because the program works locally, your maps and files stay on your own system and the developers do not process any data.