Is KyberSwap a fork of Uniswap?

I'm curious to understand the relationship between KyberSwap and Uniswap. Could you clarify if KyberSwap is a fork of Uniswap? I'm particularly interested in knowing if the two platforms share any underlying code or technical infrastructure, and if there are any notable differences in their functionality or user experience. Understanding this would help me evaluate the unique strengths and features of each platform.