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.

Patron is developing a blockchain-based marketplace for social media influencers. It will serve as a dedicated ecosystem, based on crypto payments, for brands, influencers, and their fans. Patron hopes that their decentralized network will create new opportunities for influence marketing. Users with significant social media followers will be paid with PAT tokens for marketing brands and sharing content.

AdEx is a decentralized advertising exchange built on the Ethereum blockchain. They hope to use blockchain to improve privacy, transparency, and security for viewers, publishers, and advertisers. The network is powered by the ADX token.