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.

Aeternity is a smart contract driven blockchain platform that aims to integrate real world data and improve the overall performance of smart contracts. Aeternity has a hybrid consensus algorithm that combines PoW for verifying transactions, and PoS for governance purposes. The platform is based on a system of state channels that allow users to interact privately with each other and record this information off-chain.

Neblio is developing an enterprise blockchain solution that will allow developers to create DApps more easily. Their marketing materials place a strong emphasis on improving the speed at which data can be synced with their blockchain-based platform. Neblio has a Proof-of-Stake (PoS) consensus mechanism and is powered by the NEBL token.