Uniswap is One of the leading Decentralized exchange
Uniswap was one of the first decentralized finance applications to gain significant traction on Ethereum blockchain, launching in November 2018.
Uniswap leverages multiple crypto assets, including its native UNI token, to provide a service nearly identical to a traditional exchange.
Uniswap is completely open source, which means anyone can copy the code to create their own decentralized exchanges.