Try Firefox 3 Beta on Mac without losing Firefox 2.x preferences by using a separate profile. Quickly switch between versions or run concurrently by creating a new profile and keeping all of your data safe.
To get started with MultiFireFox, you'll need to copy the launcher app to your Applications folder, along with the accompanying Firefox3.app file (which you'll need to rename to avoid any conflicts with the stable version of Firefox). Once you've done this, you can launch MultiFireFox and select the version of Firefox you want to use, as well as create or select a separate profile.
What's great about MultiFireFox is that it's very clean and simple to use. You don't have to worry about any complex settings or configurations - everything just works. It's also worth noting that MultiFireFox includes Firefox 3 Beta 3 as part of the package, and is released under the MIT License. So if you're looking for a smooth and reliable way to test out the latest version of Firefox, MultiFireFox is definitely worth checking out.
Version 2.1 Build 001: N/A