Arbitrum (Arbitrum One)
Arbitrum One is an EVM-equivalent Optimistic Rollup chain. It inherits Ethereum-level security, but transactions will be cheaper and faster.
Protocol Labs Network
The Protocol Labs Network (PLN) is a collection of projects contributing to the decentralized web. It includes Filecoin, IPFS, libp2p, and many more.
Superchain (OP Mainnet and Other OP Chains)
OP Mainnet is an EVM-equivalent Optimistic Rollup chain. It aims to be fast, simple, and secure. The Superchain includes OP Mainnet and other OP chains such as Base, Mode, Zora, and more.