Hyperledger Sawtooth is an open-source enterprise blockchainas-a-service platform that can run customized smart contracts without the need to know the underlying design of the core system. It uses Proof of Elapsed Time (PoET) consensus mechanism and allows smart contract development using Python, Javascript, Rust, Go & C++ languages.

It can be deployed as Permissioned or Permissionless Blockchain. Intel, T Mobile, IBM and Amazon Web Services (AWS) are major users of Sawtooth.