
UPX for Windows 3.91
UPX - The BEST free, portable, extendable, high-performance executable packer
UPX is a portable, free, 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.
It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks.
UPX for Windows 3.91 full details

File Size: | 358 kB |
---|---|
License: | Open Source |
Price: | FREE |
Released: | 2013-12-30 |
Downloads: | Total: 858 | This Month: 0 |
Publisher: | Markus F.X.J. Oberhumer & Lász |
Publisher URL: | http://upx.sourceforge.net/ |

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UPX for Windows 3.91 full description
UPX is a free, portable, extendable, high-performance executable packer for several executable formats
UPX achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks for most of the formats supported, because of in-place decompression.
UPX strengths in a nutshell:
excellent compression ratio: typically compresses better than WinZip/zip/gzip, use UPX to decrease the size of your distribution!
very fast decompression: ~10 MB/sec on an ancient Pentium 133, ~200 MB/sec on an Athlon XP 2000+.
no memory overhead for your compressed executables because of in-place decompression.
safe: you can list, test and unpack your executables. Also, a checksum of both the compressed and uncompressed file is maintained internally.
universal: UPX can pack a number of executable formats.
portable: UPX is written in portable endian-neutral C++.
extendable: because of the class layout it's very easy to add new executable formats or new compression algorithms.
free: UPX is distributed with full source code under the GNU General Public License v2+, with special exceptions granting the free usage for commercial programs as stated in the UPX License Agreement.
You probably understand now why we call UPX the "Ultimate Packer for eXecutables". UPX aims to be commercial quality free software, based on experience with our previous packers (DJP, lzop, and the NRV library).
UPX aims to be Commercial Quality Freeware.
UPX is a versatile executable packer with the following features:
- excellent compression ratio: typically compresses better than WinZip/zip/gzip, use UPX to decrease the size of your distribution !
- very fast decompression: ~10 MB/sec on an ancient Pentium 133, ~200 MB/sec on an Athlon XP 2000+.
- no memory overhead for your compressed executables because of in-place decompression.
- safe: you can list, test and unpack your executables. Also, a checksum of both the compressed and uncompressed file is maintained internally.
- universal: UPX can pack a number of executable formats.
- portable: UPX is written in portable endian-neutral C++
- extendable: because of the class layout it's very easy to add new executable formats or new compression algorithms
- free: UPX is distributed with full source code under the GNU General Public License, and may be used freely even with commercial programs.
UPX is based on experience with our previous packers DJP and lzop and uses the NRV compression library.
UPX achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks for most of the formats supported, because of in-place decompression.
UPX strengths in a nutshell:
excellent compression ratio: typically compresses better than WinZip/zip/gzip, use UPX to decrease the size of your distribution!
very fast decompression: ~10 MB/sec on an ancient Pentium 133, ~200 MB/sec on an Athlon XP 2000+.
no memory overhead for your compressed executables because of in-place decompression.
safe: you can list, test and unpack your executables. Also, a checksum of both the compressed and uncompressed file is maintained internally.
universal: UPX can pack a number of executable formats.
portable: UPX is written in portable endian-neutral C++.
extendable: because of the class layout it's very easy to add new executable formats or new compression algorithms.
free: UPX is distributed with full source code under the GNU General Public License v2+, with special exceptions granting the free usage for commercial programs as stated in the UPX License Agreement.
You probably understand now why we call UPX the "Ultimate Packer for eXecutables". UPX aims to be commercial quality free software, based on experience with our previous packers (DJP, lzop, and the NRV library).
UPX aims to be Commercial Quality Freeware.
UPX is a versatile executable packer with the following features:
- excellent compression ratio: typically compresses better than WinZip/zip/gzip, use UPX to decrease the size of your distribution !
- very fast decompression: ~10 MB/sec on an ancient Pentium 133, ~200 MB/sec on an Athlon XP 2000+.
- no memory overhead for your compressed executables because of in-place decompression.
- safe: you can list, test and unpack your executables. Also, a checksum of both the compressed and uncompressed file is maintained internally.
- universal: UPX can pack a number of executable formats.
- portable: UPX is written in portable endian-neutral C++
- extendable: because of the class layout it's very easy to add new executable formats or new compression algorithms
- free: UPX is distributed with full source code under the GNU General Public License, and may be used freely even with commercial programs.
UPX is based on experience with our previous packers DJP and lzop and uses the NRV compression library.
UPX for Windows 3.91 download tags
UPX for Windows 3.91 Windows 7 release notes
New Release
* Added experimental support for Windows 64-bit PE files, based on
work by Stefan Widmann. Please use for testing only!
* bug fixes
[ UPX for Windows release history ]
* Added experimental support for Windows 64-bit PE files, based on
work by Stefan Widmann. Please use for testing only!
* bug fixes
[ UPX for Windows release history ]
UPX for Windows for Windows 7 - Copyright information
All UPX for Windows reviews, submitted ratings and written comments become the sole property of Windows 7 download. You acknowledge that you, not windows7download, are responsible for the contents of your submission. However, windows7download reserves the right to remove or refuse to post any submission for any reason.
Windows 7 Download periodically updates pricing and software information of UPX for Windows full version from the publisher, but some information may be out-of-date. You should confirm all information.
Using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for UPX for Windows license key is illegal and prevent future development of UPX for Windows. Download links are directly from our mirrors or publisher's website, UPX for Windows torrent or shared files from free file sharing and free upload services, including Rapidshare, MegaUpload, YouSendIt, SendSpace, DepositFiles, DivShare, HellShare, HotFile, FileServe or MediaFire, are not used.
Windows 7 Download periodically updates pricing and software information of UPX for Windows full version from the publisher, but some information may be out-of-date. You should confirm all information.
Using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for UPX for Windows license key is illegal and prevent future development of UPX for Windows. Download links are directly from our mirrors or publisher's website, UPX for Windows torrent or shared files from free file sharing and free upload services, including Rapidshare, MegaUpload, YouSendIt, SendSpace, DepositFiles, DivShare, HellShare, HotFile, FileServe or MediaFire, are not used.
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