Moonbeam
Moonbeam is a Polkadot parachain that provides a fully EVM-compatible smart contract environment, enabling Ethereum dApps to deploy to the Polkadot ecosystem without code changes. It uses cross-chain messaging (XCM) to connect with other Polkadot parachains and Ethereum assets. Beamswap and StellaSwap are the main DEXes, and Moonbeam specializes in cross-chain DeFi.