Software:Beerware
| Author | Poul-Henning Kamp |
|---|---|
| Latest version | 42 |
| Publisher | Yes |
| Published | 2004 |
| DFSG compatible | Yes |
| FSF approved | Yes (see "informal license" section)[1] |
| OSI approved | No |
| GPL compatible | Yes[1] |
| Copyleft | No[1] |
| Linking from code with a different license | Yes |
Beerware is a tongue-in-cheek term for software released under a very relaxed license (beerware licensed software). It provides the end user with the right to use a particular program (or do anything else with the source code).[2]
Description
Should the user of the product meet the author and consider the software useful, they are encouraged to either buy the author a beer "in return" or drink one themselves. The Fedora project and Humanitarian-FOSS project at Trinity College recognized the "version 42" beerware license variant as extremely permissive "copyright only" license, and consider it as GPL compatible.[3][4] (As of 2016) the Free Software Foundation does not mention this license explicitly, but its list of licenses contains an entry for informal licenses, which are listed as free, non-copyleft, and GPL-compatible. However, the FSF recommends the use of more detailed licenses over informal ones.[1]
Many variations on the beerware model have been created. Poul-Henning Kamp's beerware license is simple and short, in contrast to the GPL, which he has described as a "joke".[5] The full text of Kamp's license is:[6]
/* * ---------------------------------------------------------------------------- * "THE BEER-WARE LICENSE" (Revision 42): * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you * can do whatever you want with this stuff. If we meet some day, and you think * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp * ---------------------------------------------------------------------------- */
See also
- 0BSD a public domain equivalent license used by Toybox and explicitly allowed for Android
- Anti-copyright license
- Careware
- Comparison of free and open-source software licenses
- Donationware
- WTFPL
References
- ↑ 1.0 1.1 1.2 1.3 "Various Licenses and Comments about Them § Informal license". Free Software Foundation. 2016-01-05. https://www.gnu.org/licenses/license-list.html#informal.
- ↑ "What Does "Free as in Speech" or "Free as in Beer" Really Mean?". http://www.howtogeek.com/howto/31717/what-do-the-phrases-free-speech-vs.-free-beer-really-mean/.
- ↑ "Licensing/Beerware". Fedora project. https://fedoraproject.org/wiki/Licensing/Beerware.
- ↑ "Beerware License". Humanitarian-FOSS. http://www.cs.trincoll.edu/hfoss/wiki/Chris_Fei:_Beerware_License. "The license is compatible with proprietary licenses and the GNU GPL, as code under this license has no restrictions whatsoever."
- ↑ I think the GNU license is a joke, it fights the capitalism it so much is against with their own tools, and no company is ever going to risk any kind of proximity to so many so vague statements assembled in a license.
- ↑ Kamp, Poul-Henning (2004-10-24). "Poul-Henning Kamp". http://people.freebsd.org/~phk/.
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