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The Debian Free Software Guidelines
The Debian Policy Manual [12],
release 2.4.1.0, date April 14th of 1998 (authors: Ian
Jackson and Christian Schwarz, and revised by David
A. Morris) provides a set of guidelines similar to the Open Source Definition.
This set of guidelines is included in the Debian distribution of
the GNU/Linux system.
The Debian Free Software Guidelines (DFSG) is our definition of
`free' software.
- 1.
- Free Redistribution.
The license of a Debian component may not restrict any party from
selling or giving away the software as a component of an
aggregate software distribution containing programs from several
different sources. The license may not require a royalty or other
fee for such sale.
- 2.
- Source Code.
The program must include source code, and must allow distribution
in source code as well as compiled form.
- 3.
- Derived Works.
The license must allow modifications and derived works, and must
allow them to be distributed under the same terms as the license
of the original software.
- 4.
- Integrity of The Author's Source Code.
The license may restrict source-code from being distributed in
modified form *only* if the license allows the distribution of
``patch files'' with the source code for the purpose of modifying
the program at build time. The license must explicitly permit
distribution of software built from modified source code. The
license may require derived works to carry a different name or
version number from the original software. (This is a compromise.
The Debian group encourages all authors to not restrict any
files, source or binary, from being modified.)
- 5.
- No Discrimination Against Persons or Groups.
The license must not discriminate against any person or group of
persons.
- 6.
- No Discrimination Against Fields of Endeavor.
The license must not restrict anyone from making use of the
program in a specific field of endeavor. For example, it may not
restrict the program from being used in a business, or from being
used for genetic research.
- 7.
- Distribution of License.
The rights attached to the program must apply to all to whom the
program is redistributed without the need for execution of an
additional license by those parties.
- 8.
- License Must Not Be Specific to Debian.
The rights attached to the program must not depend on the
program's being part of a Debian system. If the program is
extracted from Debian and used or distributed without Debian but
otherwise within the terms of the program's license, all parties
to whom the program is redistributed should have the same rights
as those that are granted in conjunction with the Debian system.
- 9.
- License Must Not Contaminate Other Software.
The license must not place restrictions on other software that is
distributed along with the licensed software. For example, the
license must not insist that all other programs distributed on
the same medium must be free software.
- 10.
- Example Licenses.
The ``GPL,'' ``BSD,'' and ``Artistic'' licenses are examples of
licenses that we consider free.
Next: BSD licence
Up: Some licences
Previous: Some licences
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Jesus M. Gonzalez-Barahona
2000-04-24