Hubble Exchange is a decentralised and modular trading system for perpetuals. Designed at the crossroads of derivatives and application-specific VMs. Hubblenet is a perp-specific network with a fully Decentralised Limit Order Book and Matching Engine embedded.
Hubble Exchange has received $3.3 million in investment from a variety of investors. They have confirmed that they will conduct an airdrop following the introduction of their token. As a result, it's very possible that early testnet users will receive an airdrop once their token is released.
https://testnet.hubble.exchange