Ethfinex exchange was established in 2018 and further rebranded to DeversiFi.  DeversiFi is a decentralized exchange, allowing you to trade with assets by connecting your Ethereum wallet to the platform without registration. It also provides over-the-counter trading. 

Ethereum, Tether and DAI are the main coins in currency pairs provided by DeversiFi. With DeversiFi, you can reserve tokens for trading by locking them. Margin trading is available with the platform. Holders of DeversiFi’s native tokens, Nectar, receive trading discounts on fees.