I have created many lot of mindmaps using FreeMind.
Now I want to continue using app.mindmapmaker.org for editing those online.
I could not find a way to open *.mm files.
This question was already asked in "General Discussion" channel during 2014, 2015, 2017 & 2021, but the response given was "not implemented yet".
Any plan to get this implemented soon.
It will be a great value addition.
Search forum for "freemind" to get these. old questions.