> Sorry, another attempt::
> http://www.informationtamers.com/WikIT/index.php?title=Free_mind_mapping_and_related_types_software
Thank you, Matthias, for that hint!
The WikiIT seems to be an extensive resource.
Feel free to add DM there.
"Licence" would be "free" (according to the statement on that page).
"Platform" would be "Web based" (from the technical perspective).
If you need any information let me know.
Cheers,
Jörg