Swarm

Swarm is a distributed storage platform and content distribution service. The primary objective of Swarm is to provide a decentralized and redundant store of Ethereum's public record, in particular to store and distribute dapp code and data as well as blockchain data.

From the end user's perspective, Swarm is not that different from WWW, except that uploads are not to a specific server. The objective is to peer-to-peer storage and serving solution that is DDOS-resistant, zero-downtime, fault-tolerant and censorship-resistant as well as self-sustaining due to a built-in incentive system which uses peer to peer accounting and allows trading resources for payment. ¹

As of December 2016, a Swarm testnet is being run on the Azure cloud.²

Swarm uses the RLPx protocol library.³

[1] https://swarm-guide.readthedocs.io/en/latest/introduction.html

[2] https://blog.ethereum.org/2016/12/15/swarm-alpha-public-pilot-basics-swarm/

[3] https://blog.golemproject.net/why-ethereum-b398df34df9b