Multiple Browser Versions on Single Machine

IETester is quite a good tool to have multiple IE versions on single machine and go some extent extra in testing.

And to have same facility with firefox, you can use Edskes Software Mozilla Firefox Collection
Another way to have multiple firefox versions is:

1. Install all different versions that you want to have in different 'Program Files' and 'Start Menu' folders.
2. Create a separate firefox profile for each version.
3. Right click shortcut icon of each version > Properties > In “Target” textbox; append “-P oldfirefox -no-remote” (without quotes). 'oldfirefox' is the profile name you created in step 2.
4. Remember, you have to append this command at all places (Desktop shortcut icon, Start Menus entry, Quick Launch icon) separately.
   

|-- Quality lies in the eyes of customer --|