Who is Uniswap's biggest competitor?

Could you please elaborate on who you consider to be Uniswap's primary competitor in the decentralized exchange (DEX) space? Are there any specific exchanges that offer similar features, user experience, or liquidity pools that pose a significant challenge to Uniswap's dominance in the market? Additionally, how does Uniswap differentiate itself from these competitors, and what strategies does it employ to maintain its leading position in the industry?