Hyperledger Sawtooth is an open source enterprise blockchain-as-a-service platform that can run customized smart contracts without needing to know the underlying design of the core system. Hyperledger is an umbrella blockchain development.
It is an enterprise solution for building, deploying, and running distributed ledgers (also called blockchains). It provides an extremely modular and flexible platform for implementing transaction-based updates to shared state between untrusted parties coordinated by consensus algorithms.