How to test multiple concurrent browser sessions in the same browser?

The Problem

Need to log into another account but hate logging in and out because you can’t remember passwords? Afraid your cookies, cache, or long forgotten weblabs may be affecting testing? Want to do side-by-side UI testing on the same browser?

A Solution

Incognito mode! (Private browsing for you Firefox folks) Most web browsers (IE, safari, Firefox, chrome) support private browser windows! Browser windows opened this way won’t utilize your cookies from your usual browser session so you can easily simulate a fresh user… a customer! Each window will retain its cookies until you exit, allowing you to be logged in with several different accounts. Now you are one step closer to becoming a multi-browser window-parallel-testing master.