There's also IPFS which is a network of static, hash-addressed content. However, note that the official client comes with "blocklists" which may be used for censorship.
There's means for dynamic content too: IPNS and Pubsub, the latter was on HN just 3 days ago: https://news.ycombinator.com/item?id=15879752
> However, note that the official client comes with "blocklists" which may be used for censorship
There's no blocklists in any of the IPFS clients and libraries at the moment. However there are plans for opt-in, community-maintained blocklists that'll allow communities to govern what content they allow.
If IPFS ever does take off, this is crucial to avoiding the reputation stink as "that piracy thing" which bittorrent currently enjoys.