Mozilla Firefox lets you create different profiles so that you can have more than one instance of Firefox on your computer.
Creating multiple profiles can be beneficial in a number of ways.
I have multiple Firefox profiles – one for blogging, another for trying out new plugins, yet another which has absolutely no plugins (Firefox is the fastest when its the lightest) and so on.
Here’s how you create Firefox Profiles in Microsoft Windows :
You are now ready to use the newly created Firefox profile which is like a fresh installation of Mozilla Firefox.
Note : You cannot run multiple profiles simultaneously.
Every time you start Firefox, the profile select dialog would be displayed. IF you do not want the dialog to appear every time you start firefox then select the Don’t ask at startup check box.