Metadium is developing a blockchain protocol for Self-Sovereign Identity. Their goal is to allow users to own all aspects of their identity. Metadium's network is powered by the Ethereum-based META token.

uPort is developing a self-sovereign identity platform for the Ethereum blockchain. It will consist of a wallet that will allow users to sign transactions and manage their keys and data more easily, as well as tools that will allow developers to issue credentials and request data from other DApps that use the paltform. uPort is a ConsenSys portfolio company.

Dock is a decentralized data exchange protocol that gives users more control over their data and identities online. Their goal is to enable interoperability between networks, and to allow consumer Apps to access personal data with the full control of the end user. The Dock network is powered by the Ethereum-based DOCK token.