Academic Free License
The Academic Free License (AFL) is a permissive free software license written in 2002 by Lawrence E. Rosen, a former general counsel of the Open Source Initiative (OSI).
| Author | Lawrence E. Rosen | 
|---|---|
| Latest version | 1.2, 2.1, 3.0 | 
| Publisher | Lawrence E. Rosen | 
| Published | 2002 | 
| SPDX identifier | AFL-3.0 AFL-2.1 AFL-2.0 AFL-1.2 AFL-1.1  | 
| Debian FSG compatible | ? | 
| FSF approved | Yes[1] | 
| OSI approved | Yes[2] | 
| GPL compatible | No[1] | 
| Copyleft | No[1] | 
| Linking from code with a different licence | Yes | 
| Website | rosenlaw | 
The license grants similar rights to the BSD, MIT, UoI/NCSA and Apache licenses – licenses allowing the software to be made proprietary – but was written to correct perceived problems with those licenses, the AFL:
- makes clear what software is being licensed by including a statement following the software's copyright notice;
 - includes a complete copyright grant to the software;
 - contains a complete patent grant to the software;
 - makes clear that no trademark rights are granted to the licensor's trademarks;
 - warrants that the licensor either owns the copyright or is distributing the software under a license;
 - is itself copyrighted, with the right granted to copy and distribute without modification.
 
The Free Software Foundation consider all AFL versions through 3.0 as incompatible with the GNU GPL.[1] though Eric S. Raymond (a co-founder of the OSI) contends that AFL 3.0 is GPL compatible.[3] In late 2002, an OSI working draft considered it a "best practice" license.[4] In mid-2006, however, the OSI's License Proliferation Committee found it "redundant with more popular licenses",[2] specifically version 2 of the Apache Software License.
See also
    
- License proliferation
 - Open Software License – similar, but reciprocal license by the same author
 - Software using the Academic Free License (category)
 
References
    
- Stallman, Richard. "Various Licenses and Comments about Them". Free Software Foundation. Retrieved October 20, 2011.
 - "Academic Free License 3.0". Open Source Initiative. Retrieved January 18, 2016.
 - "Licensing HOWTO". Archived from the original on April 2, 2010. Retrieved May 15, 2010.
 - Raymond, Eric (November 9, 2002). "Licensing HOWTO". Archived from the original on July 4, 2007. Retrieved July 7, 2007.
 
External links
    
- Text of the Academic Free License v3.0
 - Allocation of the Risk by Lawrence Rosen (PDF) – reasoning behind the Academic Free License