UPX (Ultimate Packer for eXecutables) for Windows 3.03

4.8 out of 5 stars 4.8 (114 votes)

(April 27, 2008)

Windows 2000/2003/9x/XP / Open Source / 14,755 downloads

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.

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Reviews of UPX (Ultimate Packer for eXecutables) for Windows

  1. 5 out of 5 stars
    Joseph A

    Reviewing 3.03 (Jul 29, 2008)

    To "therube" below:

    You are right on this. That is why I suggested that they include it in FileForum yesterday night.

    You can contribute too: whenever you find that there is a program or a new version of an existing program which was not posted in FileForum, suggest it to the Forum. They usually act fast on your suggestion.

    To do this, click on "List a Program" at the top of the page, whose address is
    http://fileforum.betanews.com/addprogram

  2. 5 out of 5 stars
    therube

    Reviewing 3.03 (Jul 29, 2008)

    Just to point out, though this is is just (7-29-08) appearing in betanews, the 3.03 version has been out for 3 months now.

  3. 5 out of 5 stars
    anomoly

    Reviewing 3.01 (Aug 1, 2007)

    My portable Alpx folder has these files:
    COMDLG32.OCX
    LZOP100 & 101.EXE
    upx.1, .doc, & .html
    UPX291.EXE (upx.exe)
    Must have for portable standalone aps.

  4. 5 out of 5 stars
    brusco

    Reviewing 3.01 (Aug 1, 2007)

    best exe packer out there. been using it since 1.02 and has successfully compressed exe,ocx,dlls for me about 99% of the time.

    I love it.

  5. 5 out of 5 stars
    guti

    Reviewing 3.0 (May 1, 2007)

    Yeah, the old good boy, is still the best!

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