Mindmap
Collaborative mind-map tool, requested by @globalvillagesinfo
Open Source Web based Candidates
- nextcloud mindmap: tested on staufen server, does not seem to work properly
- wisemapping.com : Java, LDAP, no mobile friendly, still maintained? Available e.g. at our friends Frama with https://framindmap.org/ but they warn it is unmaintained and risky: https://framacloud.org/fr/cultiver-son-jardin/wisemapping.html - only runs on Jessy
Commercial alternatives:
Desktop
- Freeplane is a remake of freemind
More see https://en.wikipedia.org/wiki/List_of_concept-_and_mind-mapping_software