Today I will talk to you about Changelly, which started active operations in 2016 and is already a well-known and reputable exchange.
I can say a lot of positive things about Changelly, for example it offers a fixed 0.5% cryptocurrency exchange fee. Moreover, all you need to start trading is an e-mail. Also, it has no history of security breaches - it's a secure platform.
In addition I can say that Changelly offers its widgets and API to many different services; This means you can use the exchange services directly from your wallet. Getting 24/7 live support with real people is also a very reassuring practice.
I can say two negative things about Changelly. The first is that there are high fees when trading Fiat currencies.
Secondly, the service is seldom a bit slow. I guess this is due to the nature of blockchain and it's slowing down for everyone as more people use it at the same time.