Uniswap is a popular decentralized trading protocol, known for its role in facilitating automated trading of decentralized finance (DeFi) tokens. It aims to keep token trading automated and completely open to anyone who holds tokens, while improving the efficiency of trading versus that on traditional exchanges. It has a formalized model for pooling liquidity reserves. It serves as an open-source frontend interface for traders and liquidity providers and is committed to providing free and decentralized asset exchange.