mozilla portable
Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking; tab-browsing; integrated Google search; simplified privacy controls; a streamlined browser window that shows you more of the page than any other browser; and a number of additional features that work with you to help you get the most out of your time online. Version 3.0.4 is a bug-fixing release and its changes include: several security and stability issues fixed, fixed issue where the phishing and malware database did not update on first launch, updated internal Public Suffix list. 
