Uniswap is the big dog in the decentralized exchange game with over $1tn in trading volume on the board. The Uniswap Protocol itself provides liquidity and trading for ERC20 tokens on Ethereum, but, unlike a centralized exchange, it cuts the need for a trusted intermediary that can charge fees or require know your customer (KYC) information. Its native token, UNI, enables community ownership and active stewardship of the protocol through governance.