1
0
mirror of https://github.com/github/choosealicense.com synced 2024-06-30 23:53:02 +02:00
choosealicense.com/README.md
2017-05-12 13:25:12 -07:00

84 lines
5.3 KiB
Markdown

**[ChooseALicense.com](http://choosealicense.com)** aims to provide **accurate**, **non-judgmental**, and **understandable** information about **open source licenses** in order to **help people make informed decisions** about the projects they start, maintain, contribute to, and use.
We catalog [select](CONTRIBUTING.md#adding-a-license) open source licenses with a [Jekyll collection](https://jekyllrb.com/docs/collections/) (in `_licenses`). The catalog is used to render [ChooseALicense.com](http://choosealicense.com) and is regularly vendored into [Licensee](https://github.com/benbalter/licensee), which GitHub uses to provide a [license chooser and license detection](https://help.github.com/articles/adding-a-license-to-a-repository/), a [licenses API](https://developer.github.com/v3/licenses/), and to [display license descriptions and metadata](https://github.com/blog/2335-open-source-license-descriptions-and-metadata).
The website navigation is
Collaborative
[the CONTRIBUTING file](CONTRIBUTING.md#adding-a-license)
## License
The content of this project itself is licensed under the [Creative Commons Attribution 3.0 license](http://creativecommons.org/licenses/by/3.0/us/deed.en_US), and the underlying source code used to format and display that content is licensed under the [MIT license](http://opensource.org/licenses/mit-license.php).
## License metadata
Licenses sit in the `/_licenses` folder. Each license has YAML front matter describing the license's properties. The body of the file contains the text of the license in plain text. The available metadata fields are:
#### Required fields
* `title` - The license full name specified by http://spdx.org/licenses/
* `spdx-id` - Short identifier specified by http://spdx.org/licenses/
* `source` - The URL to the license source text
* `description` - A human-readable description of the license
* `how` - Instructions on how to implement the license
* `permissions` - Bulleted list of permission rules
* `conditions` - Bulleted list of condition rules
* `limitations` - Bulleted list of limitation rules
#### Optional fields
* `featured` - Whether the license should be featured on the main page (defaults to false)
* `hidden` - Whether the license is neither [popular](https://opensource.org/licenses) nor fills out the [spectrum of licenses](http://choosealicense.com/licenses/) from strongly conditional to unconditional (defaults to true)
* `nickname` - Customary short name if applicable (e.g, GPLv3)
* `note` - Additional information about the licenses
* `using` - A list of up to 3 notable projects using the license with straightforward LICENSE files which serve as examples newcomers can follow and that can be detected by [licensee](https://github.com/benbalter/licensee) in the form of `project_name: license_file_url`
* `redirect_from` - Relative path(s) to redirect to the license from, to prevent breaking old URLs
### Auto-populated fields
The licenses on choosealicense.com are regularly imported to GitHub.com to be used as the list of licenses available when creating a repository. When we create a repository, we will replace certain strings in the license with variables from the repository. These can be used to create accurate copyright notices. The available variables are:
#### Fields
* `fullname` - The full name or username of the repository owner
* `login` - The repository owner's username
* `email` - The repository owner's primary email address
* `project` - The repository name
* `description` - The description of the repository
* `year` - The current year
## License properties
The license properties (rules) are stored as a bulleted list within the licenses YAML front matter. Each rule has a name e.g., `include-copyright`, a human-readable label, e.g., `Copyright inclusion`, and a description `Include the original copyright with the code`. To add a new rule, simply add it to `_data/rules.yml` and reference it in the appropriate license.
### Rules
#### Permissions
* `commercial-use` - This software and derivatives may be used for commercial purposes.
* `modifications` - This software may be modified.
* `distribution` - You may distribute this software.
* `private-use` - You may use and modify the software without distributing it.
* `patent-use` - This license provides an express grant of patent rights from the contributor to the recipient.
#### Conditions
* `include-copyright` - Include a copy of the license and copyright notice with the software.
* `document-changes` - Indicate changes made to the code.
* `disclose-source` - Source code must be made available when distributing the software.
* `network-use-disclose` - Users who interact with the software via network are given the right to receive a copy of the corresponding source code.
* `same-license` - Modifications must be released under the same license when distributing the software. In some cases a similar or related license may be used.
#### Limitations
* `trademark-use` - This license explicitly states that it does NOT grant you trademark rights, even though licenses without such a statement probably do not grant you any implicit trademark rights.
* `liability` - This license includes a limitation of liability.
* `patent-use` - This license explicitly states that it does NOT grant you any rights in the patents of contributors.
* `warranty` - The license explicitly states that it does NOT provide any warranty.