If you're a Chrome user, an incognito window also does the trick.
Firefox and Safari have incognito modes, too. Call them something different ("new private window" is the menu label, in both cases) but they're the same thing, more or less. Not sure about Edge. Probably has one too.
>Firefox and Safari have incognito modes, too. Call them something different ("new private window" is the menu label, in both cases) but they're the same thing