Running two separate instances of Safari in the same user session I would like to run two separate Safaris at the same time. Each Safari having his own session, history, cookies, and so on.

I can do that with two users on my Mac.

But doing that in the same user session would be handier.

How can I do that ?
You can also type in the Terminal.app

open -n -a Safari


This will open an new instance of Safari even if one is already running. Not every application supports this, like Finder or FireFox. Those applications prefers to have one instance running at a time.