What makes Uniswap special?
Uniswap is a powered by, uses to validate transactions, and is. Uniswap also supports.
Uniswap is the gold standard for decentralized exchanges (or DEXs) within the DeFi space. Its combination of smart contracts is so robust that other developers have copied (or "forked") the code to build over 250 other DEXs on Ethereum and other blockchains. (Source: https://defillama.com/forks/Uniswap)