7-Zip is a file archiver with a high compression ratio.
7-Zip is open source software. 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.
High compression ratio in 7z format with LZMA and LZMA2 compression
Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.
For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 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 87 languages
The program's ability to shrink files was stunning. In our tests, 7z archives were up to 40 percent smaller then their ZIP equivalents, although compression did take longer, and the highest compression settings can hog system resources. Advanced options include the ability to create solid and self-extracting archives, and to adjust the compression level and password protection. The program also has a command line module. Though the main interface is overly simple and looks like it was designed for Windows 95, it's not hard to use and fairly self-explanatory. The context menu options, which include "testing" an archive, indicate that 7-Zip should be taken seriously.
... it is there. Features include: ZIP, ZIPX, TAR, 7zip, CAB - support for all the popular formats via our own superb compression engine. Make your attachments smaller by up to 90%. FIPS 140-2 Encryption - ZIP AES encryption is FIPS 140-2 certified, as well as FTP transfer SSL libraries, thus .... Free download of Zip to Email Free 1.00.23
... general purpose tool. AutoZIP creates ISO archives, whereas 7Zip does not. AutoZIP handles essentially everything, while the ... AutoZIP can create write these archiving formats: Zip, 7Zip, WIM, TAR, ISO, BZip2, GZip and Xz. AutoZIP ... read archives in the following formats: RAR, Zip, 7Zip, WIM, CAB, TAR, ISO, BZip2, GZip, Xz, ACE, .... Free download of AutoZIP II 18.104.22.168
7-Zip Portable is the popular 7-Zip packaged as a portable app, so you can take your file archiver with you and work with your compressed 7z, ZIP, GZIP, BZIP2, TAR, RAR files and more on the go. You can place it on your USB flash drive, iPod, portable hard drive or .... Free download of 7-Zip Portable 15.14
... Open all popular archive formats including RAR, StuffIt, 7zip, and of course Zip. Safely backup your files ... Zip RAR (rar, r00, r01, r02, ...)[read only] 7zip (7z, 7z.001, 7z.002, ...) Apple disk image (dmg) Tar Tar Gzip (tar.gz, tgz) Tar Bzip2 (tar.bz2, tbz) Tar Z (tar.Z) CPIO (cpio) ARJ [read .... Free download of Archiver
PeaZip Portable is the ideal package when you want to use a free file archiver and compressor utility without modifying your system, either because you prefer natively portable software as replacement of installable software, or you need to bring it with you on an USB stick, or when you cannot modify .... Free download of PeaZip Portable 6.3.1
Complete support for RAR and ZIP, compress 8 to 30 percent better than ZIP!. Free download of WinRAR 5.21
Zipeg is free universal .rar and .zip file opener.. Free download of Zipeg for Macintosh 22.214.171.1246
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Secure yourself against data loss and fix zip files with a free repair tool. Free download of DiskInternals ZIP Repair 1.1