Firefox V3.0.9 Portable
Features :
Mozilla Firefox is a fast, full-featured web browser that's easy to use. It has lots of great features including popup-blocking, tabbed-browsing, integrated search, improved privacy features, automatic updating and more. Plus, the launcher bundled in the Mozilla Firefox, Portable Edition, it leaves no personal information behind on the machine you run it on, so you can take your favorite browser along with all your favorite bookmarks and extensions with you wherever you go.
Installing Firefox Portable :
Just download it, move the .exe to your portable drive (USB) and double-click it, then Select the location you wish to install to and click OK [make sure you choose the exact directory, as it is going to be set to something else, so if installing on USB, choose your USB directory]. A FirefoxPortable directory will be created there and all the necessary files installed. That's all there is to it.
Using Firefox Portable :
To start up Firefox Portable, just double-click FirefoxPortable.exe file where you installed Portable Firefox on your portable drive. Then, use it just like you would a local copy of Firefox.