This is my secret trick but i want it to be shared with my readers and followers lets try
For example, open Google Chrome, Firefox and Internet explorer all at once and login to the site with different user name from each browser. You'll be able to use 3 usernames. Again open private browsing and login to the same site with another 3 new usernames. This time you'll have 6 user logins in same site.
You might be quite familiar with the above trick but the main drawback is – you'll lose your processing power since 3 browsers are working actively. And this might not be practical to you if you have low system specs.
But with some extension added to Firefox, you can do it all in one browser. Multifox is an extension that allows Firefox to connect to websites using different user names. Simultaneously! For example, if you have multiple Gmail accounts, you can open them all at the same time. Each Firefox window, managed by Multifox, accesses an account without interfering each other.