Metrix, previously known as Linda, is a Proof of Stake cryptocurrency. Metrix took over the Linda Coin project in 2019 and is currently re-branding the coin to be used within the Metrix masternode network.

Ether Zero is developing a masternode and smart contract platform. Their goal is to create a scalable blockchain development platform that will allow users to form their own governance structures and smart contracts. The Ether Zero network has a MPoS consensus mechanism that is a variation of Proof-of-Stake, with masternode functionalities.

Stakinglab is developing a comprehensive platform to connect Proof-of-Stake and Masternode projects with investors and coin holders. The company offers a variety of PoS and masternode services, and allows developers to list their PoS coins on their platform, which is powered by the LABX coin.