OpenOcean is a DEX/DeFi aggregator that provides a one-stop decentralized crypto trading solution. It aggregates liquidity across multiple blockchains, allowing users to swap tokens at the best rates with high efficiency. OpenOcean also offers limit orders, cross-chain swaps, decentralized perpetual trading, and the ability to buy crypto with Visa/Mastercard/Wire. Additionally, OpenOcean provides staking and governance, liquidity pools, farms and vaults, and ETH liquid staking.