How to run multiple version of Firefox in single System

How to run multiple version of Firefox in single
System. Run multiple Mozilla Firefox
installations using MultiFirefox utility.

MultiFirefox is an app, a launcher utility that sets
up multiple profiles and that allows you run
multiple versions of Firefox . Why would users
need such an app? MultiFirefox is an ideal tool for
webmasters. For instance, you have created a brand
new website and you want to know how does your
website going to be visualized. You can’t expect
everybody running on the same browser as yours.
Internet users have different browsers and
moreover, different versions. Users don’t always
update to the latest version. And it becomes really
difficult to manage and control the way the website
gets exposed. It takes time and resources.
How to set up MultiFireFox
Having an app that brings together all the Firefox
versions under one app makes things easier. What
is truly interesting is that it remembers your last
launch preferences and it updates itself. The
service is available in English and Dutch and the
latest version you can get it 2.2.001. Other
languages will be soon available too. There’s
another thing you need to take in account: you
need to run on PPC/ Intel or Mac OS X 10.4.9 and
you need to have a Firefox version installed. Now
let’s get to the installation process. Firefox stores
information about the your settings and about the
user items.
Launch the app and create a profile. The profile
manager will be automatically launched. After
creating the number of profiles you desire, you
simply have to click exit.
The second step consists in an automatic listing of
the different versions of Firefox that run. You have
to choose the profile and the Firefox version. Don’t
forget to adjust the download in automatic and
you’re set. This is the entire process.