7-Zip

7-Zip is a <a href="/facts/Free_and_open-source/1cHtjLCB">free and open-source</a> <a href="/facts/File_archiver/ER6mjCCy">file archiver</a>, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. 7-Zip has its own <a href="/facts/Archive_file/u7BIXv7D">archive format</a> called <a href="/facts/7z/qG1rNuWr">7z</a> introduced in 2001, but can read and write several others.
The program can be used from a Windows <a href="/facts/Graphical_user_interface/wBlQFWDP">graphical user interface</a> that also features shell integration, or from a <a href="/facts/Command-line_interface/R9JpGmXQ">command-line interface</a> as the command 7z that offers <a href="/facts/Cross-platform/16zqdvNR">cross-platform</a> support (see versions for details). An obsolete port of 7-Zip to <a href="/facts/POSIX/mQkSt234">POSIX</a> systems was called p7zip. Most of the 7-Zip <a href="/facts/Source_code/o9J6Jv23">source code</a> is under the <a href="/facts/GNU_Lesser_General_Public_License/AXwkz9x3">LGPL-2.1-or-later</a> license; the <a href="/facts/UnRAR/05tIpQFk">unRAR</a> code, however, is under the <a href="/facts/GNU_Lesser_General_Public_License/AXwkz9x3">LGPL-2.1-or-later</a> license with an "unRAR restriction", which states that developers are not permitted to use the code to <a href="/facts/Reverse-engineer/pmJCV7J7">reverse-engineer</a> the <a href="/facts/RAR_(file_format)/cgHI6gnw">RAR</a> compression algorithm.
Since version 21.01 alpha, Linux support has been added to the 7zip project.

7-Zip open-in-new

7-Zip