Description
< #Compression #7z Format #High Ratio #Localized Build #NSIS Unpacking #Utility
7-Zip is free, open-source compression software with a high compression ratio and fast extraction. Its LZMA algorithm, derived from an improved LZ77, brings a high ratio, a variable dictionary size and low memory use when unpacking — which is why so many script installers adopted it as their default.
This entry carries a community localized and re-themed build: the self-extracting module is translated, the icon set by Sparanoid and Muou replaces the default artwork, context menu icons and wording follow the Simplified Chinese WinRAR conventions, and 32-bit and 64-bit are combined in one installer. The selected build also unpacks NSIS installer scripts, which helps when you want to see what an installer actually does.
High compression ratio: the 7z format with LZMA/LZMA2 typically compresses 2-10% better than PKZip and WinZip for ZIP and GZIP output.
Broad format support: packs 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM, and unpacks dozens more including RAR, CAB, ISO, DMG, MSI, NSIS, RPM, DEB, VHD and VMDK.
NSIS script extraction: this build uses myfreeer's open-source modification to unpack NSIS installers into their scripts, useful when auditing installer behavior.
Encryption: AES-256 encryption is available for both 7z and ZIP archives, so an archive can be password protected.
Self-extracting archives: 7z can build self-extracting files that open without the software installed, and this build translates that module too.
Explorer integration: the context menu handles compression and extraction without opening the main program, with re-themed icons and WinRAR-style wording in this build.
File manager and CLI: a built-in file manager plus a full-featured command line version suitable for scripted automation.
32-bit and 64-bit in one: the installer contains both builds and picks the right one for your system.
Free and open source: 7-Zip itself is open source under the GNU LGPL for most of its code, free for personal and commercial use with no registration or payment.
7-Zip is free, open-source compression software with a high compression ratio and fast extraction. Its LZMA algorithm, derived from an improved LZ77, brings a high ratio, a variable dictionary size and low memory use when unpacking — which is why so many script installers adopted it as their default.
This entry carries a community localized and re-themed build: the self-extracting module is translated, the icon set by Sparanoid and Muou replaces the default artwork, context menu icons and wording follow the Simplified Chinese WinRAR conventions, and 32-bit and 64-bit are combined in one installer. The selected build also unpacks NSIS installer scripts, which helps when you want to see what an installer actually does.
Features
High compression ratio: the 7z format with LZMA/LZMA2 typically compresses 2-10% better than PKZip and WinZip for ZIP and GZIP output.
Broad format support: packs 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM, and unpacks dozens more including RAR, CAB, ISO, DMG, MSI, NSIS, RPM, DEB, VHD and VMDK.
NSIS script extraction: this build uses myfreeer's open-source modification to unpack NSIS installers into their scripts, useful when auditing installer behavior.
Encryption: AES-256 encryption is available for both 7z and ZIP archives, so an archive can be password protected.
Self-extracting archives: 7z can build self-extracting files that open without the software installed, and this build translates that module too.
Explorer integration: the context menu handles compression and extraction without opening the main program, with re-themed icons and WinRAR-style wording in this build.
File manager and CLI: a built-in file manager plus a full-featured command line version suitable for scripted automation.
32-bit and 64-bit in one: the installer contains both builds and picks the right one for your system.
Free and open source: 7-Zip itself is open source under the GNU LGPL for most of its code, free for personal and commercial use with no registration or payment.
