The Sovrin Foundation open sourced the codebase used to create the Sovrin Network and contributed the initial code to Hyperledger Indy, a project dedicated to blockchain under the Linux Foundation umbrella. Hyperledger Indy is a distributed ledger, purpose-built for decentralized identity. Developers can use the tools and libraries from Hyperledger Indy to create identity solutions that are interoperable across jurisdictions and agencies. This interoperability allows developers to create cross-industry solutions such as Fintech and Healthcare that can all work together and obey each other’s regulatory standards.
Hyperledger Indy has complete open source specifications, terminology, and design patterns that allow for the development of decentralized identity solutions.
See here if you are interested in developing on Sovrin and using Hyperleger Indy.
Read more about the technical stack of Sovrin.