mirror of https://github.com/zulip/zulip.git
41 lines
2.0 KiB
Markdown
41 lines
2.0 KiB
Markdown
# Licensing
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Zulip is distributed under the [Apache 2.0
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license](https://github.com/zulip/zulip/blob/main/LICENSE). This means that all
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contributions to Zulip — code, images, sounds, etc. — must be compatible with
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this license.
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## Contributing your own work
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If the work you are contributing is 100% your own, Zulip doesn't require you to
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sign a copyright assignment or a contributor license agreement for your
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contribution. As noted [in the GitHub Terms of
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Service](https://docs.github.com/en/site-policy/github-terms/github-terms-of-service#6-contributions-under-repository-license):
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> “Whenever you add Content to a repository containing notice of a license, you
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> license that Content under the same terms, and you agree that you have the
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> right to license that Content under those terms... This is widely accepted as
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> the norm in the open-source community; ...”
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## Contributing someone else's work
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If any part of your contribution is from someone else (code snippets, images,
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sounds, or any other copyrightable work, modified or unmodified), you need to
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check whether it was distributed under an open-source license that is
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[compatible][wiki-compatibility] with the [Apache 2.0
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license](https://github.com/zulip/zulip/blob/main/LICENSE). If it was not, this
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work cannot be contributed to Zulip, with or without modification.
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[wiki-compatibility]: https://en.wikipedia.org/wiki/License_compatibility#Compatibility_of_FOSS_licenses
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If you have verified that the work is OK to use, you will need to provide
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appropriate attribution in the [`docs/THIRDPARTY`
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file](https://github.com/zulip/zulip/blob/main/docs/THIRDPARTY) as part of your
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PR. Please refer to the [`debian/copyright` file
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documentation](https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/)
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for a detailed description (including examples) of how to correctly describe the
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copyright and licensing information in your PR.
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If you are not sure about the licensing or attribution for your work, please
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include the full details of your open questions in the description for your PR.
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