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.

Staked is a PoS block staking node operator. The company allows crytpocurrency holders to earn interest by earning the staking rewards offered by a variety of Proof-of-Stake currencies. Staked’s white-labeled staking platform enables exchanges, custodians, wallets and financial institutions to offer staking to their customers.

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.