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Is there any FireFox plugin which acts the same as IE8 developer tools in a way that it has an option to switch from different modes or versions?

I had many issues when installing different versions of FireFox in just one machine. I now have 3.0, 3.6, 4.0.1 and 5.0.1 of FF but I got a problem regarding add-ons, it seems like they share just one location where add-ons are in.

If I open FF 3.0, since some add-ons are latest version for 4.0.1 and are not compatible with FF 3.0, it will disable them, then when I go back to the later version, add-ons which was disabled by the older FF will be gone.

Anyway my platform is Windows 7 32-bit.

kazinix
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  • See related: http://stackoverflow.com/questions/1111920/multiple-firefox-versions-on-same-pc – Mrchief Aug 11 '11 at 05:41
  • @Mrchief, It's not working for me, I got `The path specified in the target is not valid` when I set target: `C:\Program Files\Mozilla Firefox 3.0\firefox.exe -p FF3_0`. But when I remove `-p ff3_0` it's fine working. – kazinix Aug 11 '11 at 05:51
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    The `-p FF3_0` needs to go outside of the quotes in the _target_ box. The quotes only exist because of the space in the directory `Program Files`. – andyb Aug 11 '11 at 06:04
  • @andy, is it like typing in a command prompt? if there is a space in my profile name should I type `"C:\Program Files\Mozilla Firefox 3.0\firefox.exe" -p "FireFox 3.0"` – kazinix Aug 11 '11 at 06:20
  • @domanokz Yes, it is like the command prompt. My profile name doesn't have spaces in so for me it's just `-p FF3_0`. You might need to quote your profile name as well – andyb Aug 11 '11 at 07:04

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Start firefox with following option

  • firefox.exe -ProfileManager

For each profile you can add individual addon's which do not conflict with other profile addons. Ensure you give different names for different profiles in different firefox versions.

Ratna Dinakar
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  • Or probably simpler: create an empty directory for each profile somewhere and start Firefox with the correct profile directory as command line option: `firefox.exe -no-remote -profile c:\...\profile1` – Wladimir Palant Aug 11 '11 at 06:28
  • @Ratna, I've successfully created different profiles, I've set each shortcut on the desktop to different profiles. Now, the problem is, I if one FF is open and I want to open another FF with different version, the first FF's version will be opened. How to deal with that? – kazinix Aug 11 '11 at 06:28
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    @domanokz: See my comment, the `-no-remote` command line option takes care of that (not sure whether Firefox 3.0 supports it however, why did you install this ancient version instead of Firefox 3.6 anyway?). – Wladimir Palant Aug 11 '11 at 06:29
  • @Wla Ha ha! You know, our clients here are still using FF 3.0, they are grannies so we can do nothing but to optimize the website for them. Thanks! – kazinix Aug 11 '11 at 09:57