SourceForge remains the safest way to obtain because it connects directly to the developers at PortableApps.com. By downloading the .paf.exe installer and extracting it to a USB drive, you ensure you have a secure, private browsing experience wherever you go.
Firefox Portable had a significant impact on the way people used software. It empowered users to take their browsing experience with them, wherever they went. The project also influenced the development of other portable applications, demonstrating the feasibility of creating software that could be easily carried and used on multiple machines. firefox portable sourceforge