Glossary
Besu
Hyperledger Besu — a Java Ethereum execution client by ConsenSys, popular in enterprise / consortium deployments with permissioned chain support.
Besu is the Java-based Ethereum execution client originally developed by PegaSys (now part of ConsenSys) and donated to the Hyperledger Foundation. It supports both public Ethereum mainnet and permissioned consortium deployments (IBFT, QBFT, Clique consensus alternatives).
In enterprise contexts Besu often appears alongside Hyperledger's broader stack and integrates cleanly with Java/JVM tooling. It is the least-deployed of the four main mainnet execution clients but remains important for client diversity and enterprise use cases.