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.

GINcoin is designed to be a masternode-facilitating blockchain and coin. It lowers the technical requirements to set up a masternode on any blockchain. GIN can also be used as a DApp development platform. GINcoin uses a Delayed Proof of Work consensus algorithm to verify transactions.

Nethereum is an open source .NET integration library for Ethereum. It is designed to help developers easily integrate the Ethereum blockchain into their .NET applications. It consists of modular libraries for features that are covered are writing smart contracts, cryptographic wallets, DApps, and managing blockchain data.