Free, open-source mind mapping tool for paper structure, research design and project planning.
Freeplane is a free, open-source mind mapping and knowledge organisation tool for building paper outlines, research question frameworks, project plans, course structures and literature theme maps. It suits turning complex research ideas into hierarchical structures.
Use cases: mind maps, paper structure, research design, project planning, organising literature themes
Note: For formal flowcharts and paper figures, use diagrams.net, Mermaid, Graphviz or Inkscape.