Freeplane
Mind-mapping and knowledge organization tool evolved from FreeMind with scripting and filters.
Why it is included
GPL-3.0+ desktop mind mapper common in education and research.
Best for
Brainstorming, course outlines, and structured idea maps offline.
If you use Windows, Mac, or paid tools
Mind mapping alternative to MindManager (paid), XMind paid features, and MindNode for offline maps.
Strengths
- Filtering
- Scripting
- Import/export
Limitations
- UI shows its Java desktop heritage
Good alternatives
Logseq outliner · Obsidian (non-FOSS core)
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