DFlow is a Solana protocol for creating order flow markets, in which arbitrary off-chain entities can sell signals to on-chain programmes. A specialised and primary use-case of the DFlow protocol is to offer flow toxicity signals to decentralised liquidity-bearing venues, such as AMMs and CLOBs, who can subsequently tailor their behaviour based on order toxicity. DFlow has raised $7.5 million in funding from investors including Coinase Ventures and Multicoin Capital, and it has begun an XP campaign. They don't yet have their own token, but, likely, users who sign up, deposit tokens, and earn XPs will receive an airdrop when it goes live.
https://dflow.net/en/reward