Mozilla Firefox - Portable Edition (formerly Portable Firefox) is the popular
Mozilla Firefox web browser that allows you to take your bookmarks,
extensions and saved passwords with you.

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. 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.