I have a few sites i using for options trading :
I'm using this site a few months ago, Please DYOR & DWYOR before using the service this it's not a shilling site and other. I'm just sharing from my experience.
Thanks, but I was looking for Options trading platform in Crypto-sphere. Anyways, I've found what I was looking for. If you haven't tried it yet, Give Sparrow Exchange a try. Simple and effective.