I might have missed a native desktop nostrudel i guess, but i doubt it. Correct me if i'm wrong please.
If it uses your browser, its not native.
These clients seem to be designed for phones and use the browser infrastructure, then they get slightly changed for the desktop. As a result they are slow, clunky, usually rather buggy and are huge resource hogs. 

 I don't have the knowledge or understanding on this to be able to speak to it. That's why I thought it was a desktop. Are you saying that to be a desktop it is system based and not browser based?