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.

The Amp token is a digital collateral token that is specifically designed to enable the decentralized collateralization of digital asset transactions. It evolved from what was previously known as the Flexacoin network, and is meant to allow the token to better facilitate recent innovations related to borrowing and lending in the DeFi space. The Amp token's supply was created by burning the existing supply of Flexacoins, which were exchanged for the new token at a rate of 1:1. Amp will improve upon Flexacoin’s collateralization features with a new architecture that will allow for the implementation of additional on-chain supply operations and more collateral-related DeFi options.

Spendcoin is an open-sourced cryptocurrency designed for the Cross Ledger Ecosystem, which includes the Spend App and the Blockchain University. The project is run by the Spend Foundation. Their network is currently powered by the Ethereum-based SPND token. Users receive tokens for performing tasks in the Spen ecosystem.