Diamond (DMD) is a Proof-of-Stake coin focused on scarcity. Their marketing materials emphasize the limited circulation of the coin, and the benefits of the network's incentivized cloud mining system, which rewards users for contributing their computing resources.

BOMB is an Ethereum based token that is designed to be a deflationary cryptocurrency self-destructing currency. The project is meant to be a social experiment and financial case study to determine the feasibility of a deflationary currency. There were originally 1,000,000 BOMB in circulation, and 1% of each transaction is destroyed.

Qtum has been described as a hybrid between Ethereum and Bitcoin. Qtum is a smart contracts platform that places a strong focus on value transfers as well as decentralized apps. Qtum enables users to create smart contracts on the platform and conduct cryptocurrency transactions.
Qtum has a Proof-of-Stake (PoS) consensus algorithm. Several decentralized apps are already using the platform.