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7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also there is unRAR license restriction for some parts of the code. Read 7-Zip License information.
Download p7zip for Linux (Posix) (x86 binaries and source code): Download p7zip. p7zip at SourceForge. p7zip is the command line version of 7-Zip for Linux / Unix, made by an independent developer. Some unofficial p7zip packages for Linux and other systems: p7zip for Debian (and Ubuntu) p7zip for Fedora Core.
7-Zip 9.20 supports RAR 2/3/4 formats only and doesn't support RAR5 archives. But latest versions of 7-Zip supports RAR5 archives. Why does drag-and-drop archive extraction from 7-Zip to Explorer use temp files?
It's possible that new version of 7-Zip can solve your problems with 7z archives. So download latest version of 7-Zip and try to use that new version. You can try also latest alpha or beta version.
You can download 7-Zip sources and binaries from Download Page. Major part of 7z code is included to LZMA SDK . Applications that support 7z archives: WinRAR, PowerArchiver, TUGZip, IZArc.
Technical Support for 7-Zip. Check that you use latest version of 7-Zip. If you want to report about some problem, check also latest development version of 7-Zip. It can be beta or alpha version. Maybe your problem is already fixed in some new version. If you have 64-bit Windows x64, check that you use 7-Zip x64.
7-Zip download files. 7-Zip download files. 7-Zip files at www.7-zip.org. 7-Zip files at SourceForge.
In our tests, 7-max gives 10-20% speed improvements on modern file compression programs like 7-Zip. Windows uses small (4 KB) RAM pages by default. If you run any application with 7-max, that application will use large (2 MB) RAM pages.
The licenses for files are: 1) 7z.dll: - The "GNU LGPL" as main license for most of the code. - The "GNU LGPL" with "unRAR license restriction" for some code. - The "BSD 3-clause License" for some code. 2) All other files: the "GNU LGPL".
- 7-Zip now can unpack ZIP, SquashFS and RPM archives that use ZSTD compression method. - 7-Zip now supports fast hash algorithm XXH64 that is used in ZSTD. - 7-Zip now can unpack RAR archives (that use larger than 4 GB dictionary) created by new WinRAR 7.00. - 7-Zip now can unpack DMG archives that use XZ (ULMO/LZMA) compression method.