Files with the .paf extension are most commonly associated with portable USB flash drives. The PAF files contain installers for portable applications that can be stored on the USB flash drive. These files allow the applications to be run from the flash drive on any Windows-based computer, rather than the computer's hard drive. FireFox Portable, 7-Zip Portable and OpenOffice Portable all use the PAF file format, as do a variety of other portable applications. The PAF file format is similar to the U3P file format, but it is based on different technology.
The .paf file extension is also used for Ensoniq PARIS audio files and Personal Ancestral files.
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If you have additional information about the PAF file format or software that uses files with the PAF suffix, please do get in touch - we would love hearing from you.