HelpWhat client is this?

I've seen many people use this client, this was just a picture of someone using this client in Selling. Can someone tell me which it is?
https://i.imgur.com/x0KoT7k.png

crazy client

Looks like Crazy client to me. Just use someone's updated client.

Yes it still works,
https://www.mpgh.net/forum/showthread.php?t=1348952