Multichain is a company that provides a cross-chain router protocol for the Web3.0 ecosystem. Their services include anyCall, veMULTI, Explorer, and Docs. Multichain aims to facilitate seamless swapping between different blockchains, reduce fees, and enable non-custodial and MPC-based cross-chain bridging and smart contract operations. They support a wide range of tokens and provide free listing and easy integration for projects. Multichain is focused on decentralization and interoperability in the blockchain industry.