A hard fork refers to a radical change in the protocol of a blockchain network that effectively results in two branches, one following the previous protocol and one following the new version.
Hashed Time Lock Contract (HTLC) reduces counterparty risk in decentralized smart contracts by effectively creating a time-based escrow that uses a cryptographic passphrase.
Hyperledger is an open source community dedicated to developing a set of stable frameworks, tools and libraries for permissioned enterprise-grade blockchain deployment.
Hyperledger composer is a business-oriented set of tools for creating enterprise blockchain applications under the auspices of the Hyperledger project.
Hyperledger Explorer is a user-friendly web application tool used to view or access transactions, digital wallets, and other information stored on a Hyperledger blockchain deployment.