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.

BlockMason is a technology company that provides users with a blockchain base-layer for creating DApps. The Blockmason Credit Protocol provides a standardized smart contract platform for recording credit and debt obligations on the blockchain. Their network is powered by the Ethereum-based BCPT token. BlockMason also created Lndr, which is a peer-to-peer bill-splitting and expense-sharing App that is available on iOS and Android.

Semux is developing a blockchain platform for creating decentralized applications. Semux's platform is written entirely in Java and is powered by the native SEM coin. It has a Byzantine Fault Tolerant consensus algorithm that is designed to confirm transactions quickly.