Heimer
Heimer – free and open source, multiplatform and simple software for creating mind map, diagram, and note-taking tool
Heimer – free and open source, multiplatform and simple software for creating mind map, diagram, and note-taking tool
VYM (View Your Mind) – free and open source, multi-platform tool to generate and manipulate maps which show your thoughts
Freeplane – free and open source, multi-platform software for creating mind map, as well as knowledge management
XMind – free and cross-platform software for creating mind maps
FreeMind – free and open source software for creating mind map