Altcoin.io is a decentralized cryptocurrency exchange launching in early 2018. It is an exchange built by traders for traders.
I'm really looking forward when this exchange launches because of it's going to be decentralized and trader oriented. Bittrex, Polo etc... has had it fair share of problems, so it never hurts to have more options as a investor/trader. You can clink the hyperlink above to get a preview of it. What are your thoughts on it?