zkSync Hard
zkSync is a trustless Layer 2 protocol for scalable low-cost payments on Ethereum, powered by zkRollup technology. It is a user-centric zk rollup platform from Matter Labs, with security, user experience, and developer experience as the core focus.
Hyperlane Medium
Hyperlane, previously known as Abacus, is a generalized interchain messaging protocol offering an on-chain API that sends and receives messages across chains. It is primarily a tool built to empower developers to send data between chains and create natively cross-chain applications.