TezEx is the first decentralized cross-chain bridge on Tezos. TezEx is also the first non-custodial decentralized exchange for both traders as well as liquidity providers. If you would like to be a liquidity provider on TezEx watch this video and follow the instructions/links in the description.
Right now TezEx Bridge (Beta) is operational. You can trade between USDC and USDtz, as well as between ETH and ETHtz, and back. Soon we will launch TezEx (Beta). TezEx Bridge will be rolled into TezEx. TezEx will include more cross-chain swaps (including Tether) as well as swaps between Tezos tokens and Tez (XTZ). More features will be added over time.