Originally redeployed from HavenSwap by Antisocial labs, GenaDrop Swap (swap.genadrop.near) allows you to select NFTs from your wallet and an amount of NEAR for desired NFTs in another wallet, putting it in a escrow contract. You can check offers to see what offers you have recieved, you can also cancel past offers to recieve your NFTs back. The point of this is to drastically change the behavior of how we exchange our digital collectibles.