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Softonic Rating:
Not bad:6/10
License:
Free (GPL)
Added:
November 10, 2006
Updated:
May 14, 2008
Publisher:
Website
File size:
321 KB
Downloads:
481

“Compression and decompression tool for Windows”

UPX is a free, portable, extendable, high-performance executable packer for several different executable formats. It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks because of in-place decompression. UPX uses the NRV compression library for compression services. A compatible but somewhat less efficient OpenSource implementation is available through the UCL compression library.

Languages:

English

Recent changes in UPX:

  • New format: added support for arm/pe (ARM executables running on WinCE)
  • New format: added support for linux elf/amd64
  • New format: added support for linux elf/ppc32
  • New format: added support for mach/ppc32 (Apple Mac OS X)
  • New format: added support for bootable Linux kernels ("vmlinuz/386")
  • New format: added support for Playstation exes ("ps1/exe")
  • Slightly better compression using the new NRV2E algorithm
  • New options for compression tuning (e.g. '--brute')
  • Improved win32/pe compatibility
  • Direct ELF-to-memory decompression
  • Various bug fixes

OS requirements for UPX:

  • OS: Win95/98/98SE/Me/2000/NT/XP

UPX options

UPX Options

Reviews for UPX in other languages

  • UPX (Testbericht auf Deutsch)
  • UPX (Análisis en español)
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