Libre.fm is a music community website that aims to provide a Free Software replacement for
last.fm. #### Important Lemmy doesn’t have flags yet, so please tag your posts with [Question], [Help], [Other], [Promoting], [Artist], [Album], [Song], [Radio], [Station] or other you may think is appropriate. #### This is a sister community of -
Free/Libre music -
Free Music Archive -
funkwhale -
Magnatune 
What do you mean? in terms of content, software or both?
Both.
As far as I know The GNU FM project is not longer available. Mostly of the sites that used its software, with the exception of libre.fm, are down. The software is outdated, the last commit in the git repo (mirror) was made 7 years ago. Their catalog is small, and also outdated.
As a community it is different; many sites that are not related to the original project still refer to themselves as librefm, are in many languages and carry the essence of publishing CC/libre content.
ListenBrainz is a little bit alive. Has anyone tried both to compare them? https://blog.metabrainz.org/category/listenbrainz/
I’ve never heard it. I will check it out :)