Probably switchdex and mcafeedex owned by Mcafee 
Officially he is just Advisor there
unofficially...who knows
https://switch.ag/about.php
On switch Twitter you can see McAfee all over the place
https://twitter.com/switchag
and this one is mcafee own this exchange or they are just using mcafee popularity ?
Checking the websites using mobile and its so laggy its hard to use harder than forkdelta and no other info can be seen in the website.