SelfKey is developing a blockchain-based self-sovereign identity ecosystem. Their decentralized identity management solutions are designed to allow users to better control their personal information, while also facilitating KYC procedures for a variety of purposes. SelfKey's platform revolves around the concept of Proof Of Reputational Stake, which requires users to stake Ethereum-based KEY tokens to participate in the network. Smart contracts release the staked tokens when the user leaves the ecosystem

The Sovrin Foundation is a non-profit organization dedicated to establishing the Sovrin network. Their goal is to create a purpose-built blockchahin, with a native token, that will facilitate creating and maintaining self-sovereign identities. The Sovrin token will provide incentives to value exchange that preserves privacy. It could also enable a global marketplace for digital credentials and personal data.
This is an important project that has lofty goals, but has the potential to revolutionize several major industries.

Aston is a decentralized document distribution network that enables users to better control their personal documents and professional certifications. It records, authenticates, and distributes identifying documents and information, and integrates biometric identification to ensure security.
Aston's platform is based on X-Chain architecture, which has a hybrid consensus mechanism. It combines a Proof of Forkability (PoF) mechanism with a Distributed Proof-of-Stake (dPoS) consensus protocol that stores and distributes data in 3rd dimension sub-chains.
The network is powered by the ATX coin.