Uniswap was one of the first decentralized finance (or DeFi) applications to gain significant traction on Ethereum — launching in November 2018. Since then, numerous other decentralized exchanges have launched (including Curve, SushiSwap, and Balancer), but Uniswap is currently the most popular by a significant margin. As of April 2021, Uniswap had processed over $10 billion in weekly trading volume.