How to Multiple Logins Simultaneously through CookiePie?
Nowadays we are accustomed to having different profiles or accounts for various services ranging from email, social networks, community websites. But you can only login to one account at a time for a specific service due to cookies.

Today I’m gono show you a Firefox plugin that lets you login to any number of accounts of the same service. CookiePie is a Firefox add-on that manages cookies on a per tab basis, letting you use multiple accounts from just a single browser.
However, the author’s site indicates that there are still a few bugs that needs to be mend (e.g. conflicts with Tab Mix Plus) but it still works out pretty good, especially for those of us who need multiple log-in sessions.
Download CookiePie add-on here.
Here’s a video on how to handles two Gmail accounts simultaneously:
Will multiple logins affect the speed of my computer? On the other hand, it’s going to save us time waiting for each one of them to download.