Multi Firefox?

Question

How can I test my website in multiple versions of firefox? I have v2 installed. Now no matter where or how many times I install FF3, it always executes ff2..

I checked the interweb and it seems there used to be a MultiFireFox tool that could run several versions. It was for apple and I'm on windows. Furthermore all the links to it are dead.
I also found an option I could add to the executable. But since I cannot start FF3 to begin with, I reckon this doesn't make much sence.

Something like MultipleIE would be great. Suggestions?

Answer 1

You might try setting up a few virtual machines, and installing different browser versions on each.

Ex:

• VM1 - IE6, FF1
• VM2 - IE7, FF2
• VM3 - IE8B, FF3

etc.

Answer 2

What you need to do is set up two profiles, one for Firefox3 and on for Firefox 2. It's a pretty simple process; I've got them both running and I love it!

Here's one way to set up two profiles

Answer 3

Try out Firefox portable... each version one folder.

Answer 4

Use -no-remote to avoid just telling the running instance to open a new window.

Usually you'll want to combine that with -P to run both instances with different profiles.

Just check the available command line options.

Answer 5

The general case of running two separate Firefox processes is described in this Mozillazine article. There's also this article which covers different versions specifically.

To make life easier I recommend downloading the nightly builds in zip format rather than trying to run the installers (eg. here's the current 2.0 trunk).

Answer 6

If you just have to check standalone pages (i.e not part of a flow), you can test your pages online with Browsershots - http://browsershots.org/

Browsershots is a free open-source online service that takes a URL & as per your choosing, checks it on a variety of browsers, different versions of each and on different Operating systems.