Cardstack is a blockchain technology company that is developing an open-source framework and consensus protocol to make blockchains more usable and scalable. Their goal is to create a decentralized modular smart contract ecosystem. The Cardstack network is powered by the Ethereum-based CARD token.

MetaHash is developing a blockchain platform for creating DApps. Their network has a multi Proof-of-Stake (PoS) consensus mechanism that is designed to increase transaction speeds and block formation times by using all of the nodes on the network.