Non-Commerical LicenseΒΆ

This program, "genozip", and all associated, source code, object code,
documentation and other files, are copyright (C) 2019-2021 Divon M Lan (
"Copyright Owner"). All rights reserved.

This license is limited in scope, and covers NON-COMMERCIAL and some
other limited use cases as described below.

For a commercial license, please contact

Acknowledgement: portions of the text of this license are based on Apache
License 2.0, however it differs from it substantially


1. Definitions.

"License" shall mean the terms and conditions for use, reproduction, and
distribution as defined by Sections 1 through 9 of this document.

"Licensor" shall mean Copyright Owner or entity authorized by Copyright
Owner that is granting the License.

"Legal Entity" shall mean the union of the acting entity and all other
entities that control, are controlled by, or are under common control
with that entity. For the purposes of this definition, "control" means (i
) the power, direct or indirect, to cause the direction or management of
such entity, whether by contract or otherwise, or (ii) ownership of fifty
percent (50%) or more of the outstanding shares, or (iii) beneficial
ownership of such entity.

"You" (or "Your") shall mean an individual or Legal Entity exercising
permissions granted by this License.

"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation source,
and configuration files.

"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but not limited
to compiled object code, generated documentation, and conversions to
other media types.

"Executable" shall mean a type of Object, for which there exists an
operating system of a computing device, for which said operating system
is capable of running said Object as an operating system process.

"Work" shall mean the work of authorship, whether in Source or Object
form, made available under the License, as indicated by a copyright
notice that is included in or attached to the work.

"Derivative Works" shall mean any work, whether in Source or Object form,
that is based on (or derived from) the Work and for which the editorial
revisions, annotations, elaborations, or other modifications represent,
as a whole, an original work of authorship. For the purposes of this
License, Derivative Works shall not include works that remain separable
from, or merely link (or bind by name) to the interfaces of, the Work and
Derivative Works thereof.

2. Grant of Copyright License. Subject to the terms and conditions of
this License, Licensor hereby grants to You a perpetual, worldwide, non
-exclusive, no-charge, royalty-free, revocable copyright license to
reproduce, publicly display, publicly perform, and distribute the Work in
Source or Object form (together: "Using"), subject to the following

   a. This license does NOT permit creation of Derivative Works, and does
not permit distributing modified Source or Object based on modified

   b. This license does NOT permit Using the features of the Work
intended for compressing data, including the genozip Executable, for any
purpose except b1,b2,b3,b4 hereinafter if (i). you are a commercial
entity or working on behalf or for the benefit of a commercial entity;
and/or (ii). the use of the Work is in the context of a project that has
ultimate commerical goals. 

      b1. This license DOES permit Using the Work for educational or
training purposes, including by a commerical entity.

      b2. This license DOES permit Using the Work for the purpose of
evaluating it for a duration of 30 days, including by a commerical entity

      b3. This license DOES permit Using the Work for the purpose of
distributing it to others in unmodified Source form or Object derived
from unmodified Source, and including this License via a platform that is
both publicly accessible and free of charge, including but not limited to
an Internet website

      b4. This license DOES permit Using, including reproducing and
distributing, the three Executables genounzip, genocat and genols for any
purpose including commercial.

   c. This license DOES NOT permit compressing a file, unless the
uncompressed file is also kept or the potential loss of data due to
genozip not being able to uncompress the compressed file would not cause
any harm.

   d. This license is conditional on You accurately registering Your name
, email and organization which you may be prompted for by an Executable
of the Work, or if not prompted, you should supply via email to sales

3. Submission of Contributions. Unless You explicitly state otherwise,
any software source code intentionally submitted for inclusion in the
Work by You to the Licensor shall imply complete and irrevocable
assignment by You to Copyright Owner of all copyright in the submitted
source code.

4. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work

5. Disclaimer of Warranty. Unless required by applicable law or agreed to
in writing, Licensor provides the Work on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
including, without limitation, any warranties or conditions of TITLE, NON
are solely responsible for determining the appropriateness of using or
redistributing the Work and assume any risks associated with Your
exercise of permissions under this License.

6. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise, unless
required by applicable law (such as deliberate and grossly negligent acts
) or agreed to in writing, shall any Contributor be liable to You for
damages, including any direct, indirect, special, incidental, or
consequential damages of any character arising as a result of this
License or out of the use or inability to use the Work (including but not
limited to damages for loss of goodwill, work stoppage, computer failure
or malfunction, or any and all other commercial damages or losses), even
if such Contributor has been advised of the possibility of such damages.

7. Accepting Warranty or Additional Liability. While redistributing the
Work or Derivative Works thereof, You may choose to offer, and charge a
fee for, acceptance of support, warranty, indemnity, or other liability
obligations and/or rights consistent with this License. However, in
accepting such obligations, You may act only on Your own behalf and on
Your sole responsibility, not on behalf of any other Contributor, and
only if You agree to indemnify, defend, and hold each Contributor
harmless for any liability incurred by, or claims asserted against, such
Contributor by reason of your accepting any such warranty or additional