Aori is a high-performance order book system that allows for on-chain spot trade as well as off-chain settlement. They use Seaport as an intent settlement layer, which inherits the same decentralization guarantees as a sequencer. Market makers can create, cancel, and change limit orders using gasless order creation and cancellation. Aori has confirmed that they will issue their own token named "AORI" and have allotted 5.3% of the total supply for airdrop. When the token goes live, early users that conduct testnet trades on the site may be eligible for an airdrop.
https://beta.order.aori.io