7-Zip (7zr)
https://www.7-zip.org/

Copyright (c) 1999-2024 Igor Pavlov

Licensed under the GNU Lesser General Public License v2.1
with unRAR license restriction

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7-Zip is free software distributed under the GNU LGPL.
The unRAR code is subject to restrictions on reverse engineering
of RAR archives. See below.

LGPL License:
7-Zip source code is licensed under the GNU LGPL license.

unRAR Restriction:
The decompression engine for RAR archives was developed using
source code of the unRAR program. All copyrights to original
unRAR code are owned by Alexander L. Roshal.

The license for original unRAR code has the following restriction:
The unRAR sources cannot be used to re-create the RAR compression
algorithm, which is proprietary. Distribution of modified unRAR
sources in separate form or as a part of other software is permitted,
provided that full text of this paragraph, starting from "unRAR
Restriction" is included in license, or in documentation if license
is not available, and that any such software includes a notice that
it uses unRAR technology and is not affiliated with or endorsed by
Alexander L. Roshal.
