currently only extoke exchange the only one exchange without fees trading, but this will only open within a few hours, so join in, I'm also curious whether extoke will free all fees or not.
Unfortunately, extoke exchange that scheduled to be open today had to be extended 24 hrs because they haven't completed their tests. This is a decentralized exchange though, and I don't plan to use it as my main dex. They do offer fee free trade but what bugs me that it requires a private key to make any trades. Safety is my priority.