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Title: Legal Terms
Copyrights and Licensing
========================
To be included in this distribution, a software package must either be free of
any copyright interests (i.e. exist in the "public domain") or be accompanied by
one or more copyright licenses. If accompanied by one license, the license must
be a free license. If accompanied by multiple disjunctive licenses, at least
one of the licenses must be free (the package will then be included under the
terms of one of the free licenses).
A "free" license is one that is classified as free by at least one of the
following resources and is not classified as non-free by any of the following
resources:
* [Free Software Foundation, Inc.'s License List][]
* [List of Licenses Approved by the Fedora Project][]
* [List of Licenses Approved by the Open Source Initiative][]
* [List of Licenses that Meet the Debian Free Software Guidelines][]
* [List of Licenses that Meet the Definition of Free Cultural Works][]
These resources and their license classifications are described under [License
Classification Resources][].
Licenses that are not mentioned by any of the above resources shall be reviewed
case by case. Such licenses may be considered "free" under this policy if they
meet the requirements of the following definitions:
* The [Free Software Definition][fsd], as published by Free Software
Foundation, Inc.
* The [Open Source Definition][osd], as published by the Open Source
Initiative.
* The [Definition of Free Cultural Works][dfcw], as maintained by Erik Möller
and Benjamin Mako Hill.
License Classification Examples
-------------------------------
Version 1.0 of the Artistic License is listed as a license that meets the Debian
Free Software Guidelines. However, Free Software Foundation, Inc. lists the
license as non-free. At least one resource lists it as non-free, so -- even
though at least one resource lists it as free -- Artistic License version 1.0 is
considered non-free according to this policy.
The Free Art License is categorized as free on Free Software Foundation, Inc.'s
license list and the list of licenses that meet the Definition of Free Cultural
Works. However, the Debian Project has identified multiple potential problems
in the interpretation of the license terms and lists the license as one "whose
status is unsettled", which for the purposes of this policy makes the license
non-free according to this resource. Again, at least one resource lists it as
non-free, so the Free Art License is considered non-free according to this
policy.
License Classification Resources
================================
Free Software Foundation, Inc.'s License List
---------------------------------------------
Free Software Foundation, Inc. (FSF) is a non-profit organization incorporated
in the United States of America. The FSF has published a document titled
"[Various Licenses and Comments about Them][fsfll]" that lists copyright
licenses in various categories.
For the purposes of this policy, licenses listed in the referenced document
under the following categories are considered free by this resource:
* GPL-Compatible Free Software Licenses
* GPL-Incompatible Free Software Licenses
* Free Documentation Licenses
* Licenses for Works of Practical Use Besides Software and Documentation
For the purposes of this policy, licenses listed in the referenced document
under the following categories are considered non-free by this resource:
* Nonfree Software Licenses
* Nonfree Documentation Licenses
* Licenses for Works of Opinion and Judgment
List of Licenses Approved by the Fedora Project
-----------------------------------------------
The Fedora Project is the community that develops the Fedora GNU/Linux
distribution, sponsored by Red Hat, Inc. The Fedora Project maintains a
[list of acceptable licenses][fpll] under which software may be included in
Fedora.
For the purposes of this policy, licenses listed in the referenced document
under the following categories are considered free by this resource:
* Software License List, Good Licenses
* Documentation Licenses, Good Licenses
* Content Licenses, Good Licenses
* Font Licenses, Good Licenses
For the purposes of this policy, licenses listed in the referenced document
under the following categories are considered non-free by this resource:
* Software License List, Bad Licenses
* Software License List, Unknown Licenses
* Documentation Licenses, Bad Licenses
* Content Licenses, Bad Licenses
* Font Licenses, Bad Licenses
List of Licenses Approved by the Open Source Initiative
-------------------------------------------------------
The Open Source Initiative (OSI) is a non-profit organization incoroporated in
the United States of America. The OSI has published the Open Source Definition,
a set of criteria that qualify software packages as "open source". The OSI
maintains a [list of licenses that it has approved][osial] for the "open source"
label via its License Review Process.
For the purposes of this policy, all licenses listed in the referenced document
are considered free by this resource.
List of Licenses that Meet the Debian Free Software Guidelines
--------------------------------------------------------------
The Debian Project is the community that develops the Debian GNU/Linux
distribution, sponsored by Software in the Public Interest, Inc. (SPI). The
Debian Project ratified the Debian Social Contract, including the Debian Free
Software Guidelines, a set of requirements for software packages to be included
as official parts of Debian. The Debian Project maintains a [list of licenses
that meet the Debian Free Software Guidelines][dfgsl].
For the purposes of this policy, licenses listed in the referenced document
under the following categories are considered free by this resource:
* The Big DFSG-compatible Licenses
For the purposes of this policy, licenses listed in the referenced document
under the following categories are considered non-free by this resource:
* Licenses whose status is unsettled
* Licenses that are DFSG-incompatible
For the avoidance of doubt, the GNU Free Documentation License is considered
free by this resource when it is applied with no invariant sections.
List of Licenses that Meet the Definition of Free Cultural Works
----------------------------------------------------------------
The Definition of Free Cultural Works was initiated by Erik Möller and
co-initiated by Benjamin Mako Hill. Along with the definition itself is
published a [list of licenses that meet the definition][dfcwl].
For the purposes of this policy, all licenses listed in the referenced document
are considered free by this resource.
[fsd]: https://www.gnu.org/philosophy/free-sw.html
[osd]: http://www.opensource.org/docs/osd
[dfcw]: http://freedomdefined.org/Definition
[fsfll]: https://www.gnu.org/licenses/license-list.html
[fpll]: https://fedoraproject.org/wiki/Licensing
[osial]: http://www.opensource.org/licenses/alphabetical
[dfsgl]: http://wiki.debian.org/DFSGLicenses
[dfcwl]: http://freedomdefined.org/Licenses#List_of_licenses
<!-- Warning: pseudoperl ahead
sub is_free
{
return ((free(fsfll) or free(osial) or free(dfsgl) or free(dfcwl)) and not
(nonfree(fsfll) or nonfree(osial) or nonfree(dfsgl) or nonfree(dfcwl)));
}
-->
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