7-Zip is a file archiver with a high compression ratio. You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. 7-Zip works for Windows 7, Vista, XP, 2008, 2003, 2000, NT, ME, and 98. And there is a port of the command line version to Linux/Unix. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license with GNU LGPL + unRAR restrictions. Check the license for details.

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Editor's Review

7-Zip is a file archiver with a high compression ratio for ZIP and GZIP formats, which is between 2 to 10% better than its peers, depending on the exact data tested. And 7-Zip boosts its very own 7z archive format that also offers a significantly higher compression ratio than its peers—up to 40% higher! This is mainly because 7-Zip uses LZMA and LZMA2 compression, with strong compression settings and dictionary sizes, to slow but vastly improve density. If a zip tool gains its appeal from its ability to efficiently compress files, then 7-Zip proves it has a little bit o’ magic.

7-Zip at a Glance

After you effortlessly download and launch 7-Zip, you’ll quickly discover its simple and easy to navigate interface. The main toolbar contains 7-Zip’s most used features and there are several menus that allow you to dig deeper within. For example, the Extract button lets you easily browse for or accept the default destination directory for your file, while the View menu contains a Folder History, and the Favorites menu lets you save up to ten folders. 7-Zip also integrates with the Windows Explorer menus, displaying archive files as folders and providing a toolbar with drag-and-drop functions. You can also alternate between a single or dual-pane view.

Product Details

7-Zip offers several features that make it one of the best compression software options around. For example:

  • Open architecture—The source code uses the GNU LGPL license, while the unRAR code is under a mixed license with GNU LGPL + unRAR restrictions.
  • High compression ratio—Using its own 7z format with LZMA and LZMA2 compression, 7-Zip’s compression ratio is up to 40% higher than its peers. For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10% better than PKZip and WinZip.
  • Strong AES-256 encryption—This includes both password protection of files and encryption of file names.
  • Ability to use may compression, conversion, or encryption methods—For example 7-Zip:
    • Supports packing and unpacking for 7z, XZ, BZIP2, GZIP, TAR, ZIP, and WIM.
    • Supports unpacking only for ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR, and Z.
    • Supports a self-extracting capability for 7z format.
  • Integrates with Windows Shell—Using its menu options, you can integrate 7-Zip to the Windows Shell menu.
  • Powerful file manager and command line versions—There’s also a plugin for FAR Manager.
  • Localizations for 79 languages—This kind of support is why 7-Zip is the world’s favorite free compression software.

Pros

Cons

7-Zip is easy to download and use, it opens and compresses most everything, and is has a Windows shell extension. The interface is a little sparse and so are the instructions, but the program works like a charm anyway.

Quick Specs

  • Version: 9.22
  • Date added: March 2, 2013
  • Operating systems: Windows
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User Ratings

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User Reviews

  • After so many years it's hard to believe such a great project still misses basic features such as: - Adding objects to subfolders of an archive (Now it always adds them to the root folder of the archive) - Editing files directly on the archive without the need of extracting. (E.g.: Without ever extracting - Open archive, open a text file that exists in that archive, add a word, save and close the text file, having it updated on the archive without doing anything else) I was going to create a feature request, but since i can't i wrote a review! Sorry for such a low rate, but this are basic features to me........

  • Well, we all know that 7-Zip is very good archiver, but in only one aspect: the compression ratio. And sadly, in all other aspects it is pretty crappy tool... What am I talking about? All my negative impression comes from that ridiculously minimalistic GUI design and all its limited functions. Damn, this archiver is really old already but it still doesn't have even half of the functions of WinRAR. WinRAR is superior in everything what touches usability, but 7-Zip looks like an pre-alpha tool. And there is no excuse, that 7-Zip is completely free, but it simply shows author's attitude to his creation. This is very very bad, if you ask me, actually, this is just horrible... And laughable.

  • As good as this program used to be, it also hasn't been updated in 3 years (9.22), even though 9.32alpha is around the corner. In addition still doesn't handle MSI extraction correctly. Are we ever going to see a working update?

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Additional Project Details

Languages

English

Intended Audience

System Administrators, Developers, End Users/Desktop

User Interface

Win32 (MS Windows), Command-line

Programming Language

C++, C

Registered

2000-11-10