Similar coins
Siacoin is a utility token of the cloud storage platform called the Sia network. Sia is open-source and blockchain-based. The operations take place on Sia's own blockchain. The coin is used to pay for storage rent transactions. The coin is Proof-of-Work-based meaning that Siacoin can be mined. Another use for the coin is trading. 
Energi (NRG) is a next-generation Proof of Stake (PoS) cryptocurrency that combines smart contract capabilities, decentralized governance, and a self-funding treasury.
Nebulas (NAS) coin is based on its own blockchain and functions as the native utility token of the Nebulas system. This cryptocurrency is featured by the number of exchanges.