In my view Maelstrom instantly disqualifies itself because it's kept closed source. I really don't understand how BitTorrent (the company) can take itself seriously preaching about "truely neutral" networks.

I've worked with IPFS, and it's really amazing. The development on it is very active, and the main developers are easily accessible for questions on Freenode#ipfs. I've been trying to build a tiny consensus protocol on top of it, but its native support for signing is still a little rough around the edges (and of course I've been distracted by a thousand other side-projects).

Maelstrom was a massive disappointment in my opinion, you appear to be locked in to static websites with no mechanism to issue updates. The entire site is packaged up into a single torrent blob meaning there is no hope of sharing swarms between different sites. And as has been said, it's closed source and Windows only. Avoid.