What' s the difference between ' Flarum' & ' Freeflarum ' ?

Flarum is the open source project building awesome community web software, it is owned by the Flarum Foundation to safeguard the open source nature.

FreeFlarum is a community project by @SKevo. Aside from Flarum and the foundation allowing the use of the name under specific requirements, there's no relation between the two. FreeFlarum offers freely hosted Flarum communities.