O3 Swap is a cross-chain aggregation protocol, allowing users to access multi-chain liquidity sources on one platform. O3 Swap is comprised of exchange aggregators (O3 Aggregator) and cross-chain pool (O3 Hub). O3 Aggregators are deployed on mainstream blockchains and help users find the most effective trading rates and routes in the corresponding network. By deploying "aggregator + asset cross-chain pool" on different public chains and Layer2, O3 Swap enables cross-chain transactions with one click. Currently, it has access to Heco, ETH, BSC, Neo, and will expand to Polkadot, Polygon, Solana, and other ecosystems in the future.