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.
- 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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