Beerware is a tongue-in-cheek software license with permissive terms, which grants the right to do anything with the source code, assuming the license notice is preserved.[3]
| Author | Poul-Henning Kamp |
|---|---|
| Latest version | 42 |
| Publisher | Yes |
| Published | 1998[a] |
| SPDX identifier | Beerware |
| Debian FSG compatible | Yes |
| FSF approved | Yes (see "informal license" section)[2] |
| OSI approved | No |
| GPL compatible | Yes[2] |
| Copyleft | No[2] |
| Linking from code with a different licence | Yes |
Description
editShould the user of the code consider the software useful, they are encouraged to buy the author a beer "in return" when they meet him. 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.[4][3] As of 2016[update] 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.[2]
Poul-Henning Kamp states preference of his Beerware license to other licenses, such as BSD and GPL, the latter of 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 * ---------------------------------------------------------------------------- */
Notes
edit- ^ The earliest revision on the Wayback Machine of the website of Poul-Henning Kamp that contains the license was from that year. If that is indeed the earliest publication of the license is unknown.[1]
See also
edit
- 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
edit- ^ Poul-Henning Kamp at the Wayback Machine (archived 2001-03-02)
- ^ a b c d "Various Licenses and Comments about Them § Informal license". www.gnu.org. Free Software Foundation. 2016-01-05. Retrieved 2016-01-05.
- ^ a b "Beerware License". Humanitarian-FOSS. Archived from the original on 2016-03-22. Retrieved 2015-04-20.
The license is compatible with proprietary licenses and the GNU GPL, as code under this license has no restrictions whatsoever.
- ^ "Licensing/Beerware". Fedora project. Retrieved 2015-03-27.
- ^ 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". Archived from the original on 21 April 2006. Retrieved 2006-04-24.