7-Zip is a open source file archiver with a high compression ratio. The program supports 7z, XZ, BZIP2, GZIP, TAR, ZIP, WIM, ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR, Z. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license.
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.
The main features of 7-Zip are:
- High compression ratio in new 7z format with LZMA compression
- Compression ratio for ZIP and GZIP formats: 2-10 % better than the ratio provided by PKZip and WinZip
- Strong AES-256 encryption in 7z and ZIP formats
- Self-extracting capability for 7z format
- Integration with Windows Shell
- Powerful File Manager
- Powerful command line version
- Plugin for FAR Manager
- Localizations for 74 languages
Changes in 7-Zip 17.01 Beta:
- Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression.
- 7-Zip now uses additional memory buffers for multi-block LZMA2 compression. CPU utilization was slightly improved.
- 7-zip now creates multi-block xz archives by default. Block size can be
- specified with -ms[Size]{m|g} switch.
- xz decoder now can unpack random block from multi-block xz archives. 7-Zip File Manager now can open nested multi-block xz archives. (for example, image.iso.xz) without full unpacking of xz archive.
- 7-Zip now can create zip archives from stdin to stdout.
- 7-Zip command line: @listfile now doesn"t work after -- switch. Use -i@listfile before -- switch instead.
Fixed bugs:
- 7-Zip could add unrequired alternate file streams to WIM archives,
- for commands that contain filename wildcards and -sns switch.
- 7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive.
- 7-Zip 17.00 beta ignored "Use large memory pages" option.
Download: 7-Zip 17.01 Beta (32-bit) | 7-Zip (MSI Installer) | ~1.5 MB (Open Source)
Download: 7-Zip 17.01 Beta (64-bit) | 7-Zip (MSI Installer)
Download: 7-Zip Theme Manager 2.1
View: 7-Zip Website