2Key network is a blockchain based platform for building referral campaigns. 2Key allows users to create and manage online campaigns that are powered by smart contracts. The Ethereum based 2KEY token is used to activate campaigns and to reward users for their participation.

HOQU is developing a decentralized affiliate marketing program. Their online marketing ecosystem will use blockchain to add transparency and efficiency to referral marketing. The HOQU network is powered by the Ethereum-based HQX token.