P2P tools for developing decetralized services:

https://blockstack.org/
Blockstack is a new decentralized internet where users own their data and apps run locally. A browser portal is all that’s needed to get started.

https://ipfs.io/
A peer-to-peer hypermedia protocol
to make the web faster, safer, and more open.

http://matrix.org/
An open network for secure, decentralized communication.

https://lbry.io/
LBRY is a free, open, and community-run digital marketplace.