Similar coins
RottenSwap, a deflationary SushiSwap fork.
Po.et (POE) is the Ethereum token used by the Po.et network to incentivize content creation. This digital asset is paired against other cryptos (such as BTC and ETH) on a few exchanges. 
Raiden Network Token (RDN) is an Ethereum token and available on the number of exchanges. It’s possible to trade RDN against USD on the Bitfinex platform.