The Hyperledger Sawtooth project includes the following GitHub repositories:

sawtooth-core: Sawtooth core components

sawtooth-sabre: A transaction family which implements on-chain smart contracts and runs on top of Hyperledger Sawtooth

sawtooth-docs: Source files for the Sawtooth documentation and website

sawtooth-contrib: Community-contributed software, including example libraries, applications, and reference implementations for transaction families (Sawtooth’s version of smart contracts)

sawtooth-rfcs: RFCs (requests for comments) for proposed and approved changes to Hyperledger Sawtooth