Mangrove is an on-chain order book DEX that allows liquidity providers to make offers using arbitrary smart contracts. It is an open-source protocol that has been carefully inspected by ChainSec, a highly recognized and competent business, to ensure the highest level of security and reliability.
Mangrove does not yet have its own token, but it may do so in the future. They've hinted at rewarding early adopters, so those who regularly trade on the platform may be eligible for an airdrop if Mangrove decides to launch its own token in the future.
https://app.mangrove.exchange/trade