Random_Dude Portables Thinapp's a good app!

Mozilla Firefox is a free and open source web browser descended from the Mozilla Application Suite and managed by Mozilla Corporation. A Net Applications survey put Firefox at 24.07% of the recorded usage share of web browsers as of October 2009[update], making it the second most popular browser in terms of current use worldwide after Microsoft's Internet Explorer.

P.S.= This thinapped package now has windows 7 support.