== Supported formats ==* ARM/PE* Atari/tos* *BSD/i386* djgpp2/COFF* dos/com* dos/exe* dos/sys* Linux/i386 a.out* Linux/ELF on i386, x86-64, ARM, PowerPC* Linux/kernel on i386, x86-64 and ARM* Mach-O/ppc32, Mach-O/i386 (even produced by Google Go since 3.09)* rtm32/PE* tmt/adam* PlayStation1/exe* Watcom/le* Windows/PE exe files containing native x86 (32-Bit) code* Windows/PE exe files containing native AMD64 (64-Bit) code - still experimentalUPX does not currently support PE files containing CIL code intended to run on the .NET Framework.
* ARM/PE* Atari/tos* *BSD/i386* djgpp2/COFF* dos/com* dos/exe* dos/sys* Linux/i386 a.out* Linux/ELF on i386, x86-64, ARM, PowerPC* Linux/kernel on i386, x86-64 and ARM* Mach-O/ppc32, Mach-O/i386, Mach-O/x64 (включая скомпилированные Google Go с версии 3.09)* rtm32/PE* tmt/adam* PlayStation1/exe* watcom/le* Win32/PE (исключая файлы, построенные на .NET Framework)* Win64/PE (экспериментально)В ранних версиях WinRAR SFX-модули были упакованы UPX.