February 12

Run Multiple Versions of Firefox (Mac)

Firefox LogoI have seen several posts about this but none of them seemed clear and easy to follow to me. So, here goes my version of this tutorial. Keep in mind that this tutorial assumes that you are using Firefox 2 and are trying to install Firefox 3. Here is how to do it.

  1. Download Firefox 3 Beta 5.
  2. Move the new App somewhere other than your Applications folder, rename it (Firefox3 or something like that will do), and move it into the Applications folder . If you move it to your Applications folder without renaming it first, it will replace your current copy of Firefox.
  3. Now, open a Terminal window and type the following:
    /Applications/[Renamed Firefox App].app/Contents/MacOS/firefox-bin -Profilemanager
  4. Create a new profile and makes sure to uncheck the “Don’t ask at startup” box. This way you will be asked which profile you want to use every time Firefox starts, allowing you to run two versions of Firefox at the same time.

Firefox 3 works very nicely on Mac OSX (almost as native as Safari) and with the new Proto for Mac OSX theme created for this version, not using Firefox on a Mac is pretty much a crime.

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