System administration
 » File compression
Sections : System administration > File compression
Poor visitors rating
Click to RATE : OneTwoThreeFourFive
Buy Free UPX download

UPX 3.91

It achieves an excellent compression ratio and offers very fast decompression.



UPX 3.91 facilities

Vendor`s Web
Markus FXJ Oberhumer, Laslo Molnar webshot
OSWindows 98, Windows 2000, Windows XP, Windows Vista, Windows 7, Linux
Limitationsnot specified
Actualizedmore than year ago
LicenseOpen source

Use this security logo:

100% SAFE logo

UPX manufacturer description

UPX 3.91 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 for most of the formats supported, because of in-place decompression.

UPX File compression is copyrighted software distributed under the terms of the GNU General Public License, with special exceptions granting the free usage for commercial programs as stated in the UPX License Agreement.

UPX download uses the NRV compression library for compression services. A compatible but somewhat less efficient OpenSource implementation is available through the UCL compression library.

UPX aims to be Commercial Quality Freeware.
free download UPX 3.91QUICK DOWNLOAD
Free download UPX 3.91
Free softwareFREE SOFTWARE

Freeware is computer software that is available for use at no cost or for an optional fee.


UPX video tutorials

Tutorial not found. Let know us about any useful video tutorial.

UPX categories

oberhumer, UPX, executable packer, NRV, exe-packer, UCL, compression, exepacker

Given stickers for UPX & download buttons

NOTE: move cursor over buttons to get html sources.
This award means that UPX is an Editor's pick.
Clean award guarantees that UPX was tested by antivirus program and is absolutely clean, which means it does not contain any form of malware, including computer viruses, adware, trojans, spyware, rootkits, badware and other malicious and unwanted software.
Report view - CLEAN » ZIP » upx308w/BUGS - CLEAN » ZIP » upx308w/COPYING - CLEAN » ZIP » upx308w/LICENSE - CLEAN » ZIP » upx308w/NEWS - CLEAN » ZIP » upx308w/README - CLEAN » ZIP » upx308w/README.1ST - CLEAN » ZIP » upx308w/THANKS - CLEAN » ZIP » upx308w/TODO - CLEAN » ZIP » upx308w/upx.1 - CLEAN » ZIP » upx308w/upx.doc - CLEAN » ZIP » upx308w/upx.exe - CLEAN » ZIP » upx308w/upx.exe » UPX v13_m14 - CLEAN » ZIP » upx308w/upx.html - CLEAN
Get from
Get from
Do you like UPX ? Move mouse cursor over the buttons and just copy one of those links, paste the code you copied right where you want on your blog or website.