When comparing Freeplane vs iMindMap, the Slant community recommends Freeplane for most people. In the question“What are the best mind mapping tools?” Freeplane is ranked 3rd while iMindMap is ranked 27th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free and open-source (FOSS)
Pro Supports most used *.mm file format
Pro Easy to use
Pro Possesses all Freemind pros and more
Pro Developed by veteran FreeMind devs
Pro Doesn't overwhelm with options by default
The application only surfaces the essential features by default and gives access to advanced features only when needed. For example, a you can perform 4 actions with a branch by default - add a new subtopic, add a new box topic, add a new relationship and adjust the branch's position.
Pro Allows auto-creating presentations from mind-maps
It's possible to have the application automatically create slides along with transitions for presentation purposes. It's then possible to adjust the outcome.
Cons
Con Not as beautiful as XMind
Con Does not have a mobile counterpart
You have to find yourself other tools (using the interoperable mm) on mobiles.
Con No American English language option
The software is only available in UK English.