1) Heard about Syncthing? It's a FOSS dropbox/bt sync/box/... alternative, secure, fully distributed
2) comparing to Ceph without mentioning performance? :-P You use FUSE which is a synonyme of "bound to be slow and ineffective forever" (try some real heavy duty on gluster vs. ceph, I've been there, done that, not funny) As well as ignoring CephFS.
3) I believe an interesting comparison category would be a tristate: commercial / partially free/limited feature set (foss+enterprise) / free
AdminInfinit (Admin, Infinit) commented
Thanks for the suggestions!
We did all these comparison guides quite a few time ago now where we only aimed to be a file system and where it was difficult to measure our performances. It indeed needs to be revamped quite a lot, with some other competitors as well as other measurements like "is it providing block/file/object storage?" for example. I like the commercial/free/freemium comparison point, definitely keeping it in mind.