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Uniswap Dex
Uniswap is the big dog of decentralized exchanges. You connect a wallet, swap tokens from a liquidity pool, and keep custody yourself. No account signup, no bank KYC for the protocol itself. It started on Ethereum in 2018 and now runs across many chains and L2s. V2 is the simple pool model. V3 lets LPs aim liquidity at a price range. V4 adds programmable “hooks” so pools can behave in custom ways. Deepest on-chain liquidity for majors. Gas, scams, and LP complexity are the tax you pay for that freedom.