Hyperledger is an open source framework to deploy blockchain technology. You can find a free course on Hyperledger at EDX designed by LINUX foundation called Blockchain for Business - An Introduction to Hyperledger Technologies.
LINUX foundation's official website for Hyperledger has lots of resources about currently used Blockchain Frameworks. According to them
1. Burrow: provides a modular blockchain client with a permissioned smart contract interpreter built in part to the specification of the Ethereum Virtual Machine (EVM).
2. Sawtooth : includes a novel consensus algorithm, Proof of Elapsed Time (PoET), which targets large distributed validator populations with minimal resource consumption.
3. Fabric : designed to be simple and easy to incorporate into infrastructural projects requiring distributed ledger technology.
4. Indy : provides tools, libraries, and reusable components for creating and using independent digital identities rooted on blockchains or other distributed ledgers for interoperability.
