Firefox 3.7a1pre Portable lets you try before you install
Instead of an installer, what you get when you download the portable version is an application that you click in order to extract the contents to any folder on your hard drive or a USB flash drive. Then all you have to do is open that folder and click the FirefoxPortable.exe file to launch the browser.
Keep in mind, this is pre-release software. It hasn't even reached the Alpha stage yet, which means there may be some major bugs lurking beneath the hood, so don't expect miracles. But that's all the more reason for using a portable version.
Eventually Firefox 3.7 may introduce a tweaked theme with redesigned toolbars. For now, the biggest difference between Firefox 3.7 and Firefox 3.5.2 (the latest stable edition) and Firefox 3.6 Alpha 1 (the latest Alpha version) is that Firefox 3.7a1pre features an even newer version of the Gecko rendering engine.
Update: We've removed the link to the PortableAppz download for two reasons. First, the site sharing unauthorized versions of this and other software. And more importantly, the fine folks at PortableApps.com that make an excellent suite of Portable Software asked RapidShare to remove the download links for the unofficial software that also happened to violate the PortableApps trademark.
Fortunately PortableApps.com now has a portable version of Firefox 3.7a1pre. Actually, it's even better than that. The new portable version of Firefox automatically downloads the latest pre-release builds of Firefox, so you can always test the bleeding edge (and often unstable) version of the browser without installing anything to your computer.
thanks John!
