OrbitDB
From CryptoWiki
A serverless, distributed, peer-to-peer database that uses IPFS as its data storage and IPFS pubsub to automatically synchronize databases with peers. Furthermore, it is entirely free because though it leverages Ethereum's infrastructure and signing capabilities, no messages are published to the Ethereum blockchain, which means there are no associated gas fees.
Origin dapp is being built on top of OrbitDB and is ERC-725 compatible
