Steemit is a blockchain-based social media platform that incentivizes participation with micro-payments to users and publishers. It was co-founded by Dan Larmimer, who also founded EOS and BitShares. Steemit has gained a significant following and is one of the most important content curation platforms in the blockchain space. Steemit's blockchain-based rewards content and social media platform is powered by the STEEM coin. Their blockchain has a Proof-of-Stake (PoS) consensus mechanism. Steemit also has a third-party decentralized video platform called D.tube that uses STEEM tokens to reward video creators.

TTC Protocol is a blockchain based social networking protocol. They are developing a decentralized platform that will provide tokenized incentives for contributing to their ecosystem. The network is powered by the Ethereum-based TTC token.

Howdoo is a decentralized social media network that rewards users for posting content. Their goal is to provide more direct incentives to content producers that share their content on social media networks. Howdoo's network will be governed by a system of nodes that will be required to stake tokens, and will be rewarded for their role in maintaining the networks with a percentage of the platform's revenues. Howdoo is powered by the Ethereum-based UDOO token.