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.

Chromia is a relational blockchain platform that is designed to be both a blockchain and a relational database. Chromia was created by a Swedish development company called ChromaWay, with the intention of combining the advantages of a blockchain's transparency with the benefits of a relational database system, such as data independence and reduced redundancy.

Unibright is a German Blockchain development company. Their platform is designed to assist clients with setting up and deploying smart contracts; as well as integrating their existing business systems with blockchain-based ledgers. The Unibright network is powered by the Ethereum-based UBT token.