thingsiplay, 1 year ago FreeMind maybe is what you looking for: https://en.wikipedia.org/wiki/FreeMind Freeplane seems to be an option too: https://en.wikipedia.org/wiki/Freeplane
FreeMind maybe is what you looking for: https://en.wikipedia.org/wiki/FreeMind Freeplane seems to be an option too: https://en.wikipedia.org/wiki/Freeplane