Academic Free License
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The Academic Free License is an open source / free software license written in 2002 by Lawrence E. Rosen, general counsel of the Open Source Initiative.
The license grants similar rights to the BSD, MIT, UoI/NCSA and Apache licenses — licenses allowing the software to be taken proprietary — but was written to clarify perceived problems with those licenses:
- The AFL makes clear what software is being licensed by including a statement following the software's copyright notice;
- The AFL includes a complete copyright grant to the software;
- The AFL contains a complete patent grant to the software;
- The AFL makes clear that no trademark rights are granted to the licensor's trademarks;
- The AFL warrants that the licensor either owns the copyright or is distributing the software under a license;
- The AFL is itself copyrighted, with the right granted to copy and distribute without modification.
The AFL is not a popular license. In January 2006, only 42 [1] projects on Freshmeat used a version of the license. According to the Free Software Foundation, AFL versions 1.2 and 2.1 are not compatible with the GNU GPL; however, the FSF has not commented on the newer version 3.0. Eric S. Raymond, among others, contends the AFL is compatible with the GPL.[citation needed]
- Text of the Academic Free License v1.2
- Text of the Academic Free License v2.1
- Text of the Academic Free License v3.0
- Allocation of the Risk by Lawrence Rosen (PDF) - reasoning behind the Academic Free License