## License ## Jehanne inherits a lot of code from [Plan9][Plan9] through its [UC Berkeley release][brho], [Plan9-9k][plan9-9k], [9front][9front] and [Harvey][harvey]. The initial [Plan 9][brho] code has been received, modified and is redistributed according to the GNU General Public License, Version 2 as explained in /doc/licence/LICENSE.Plan9.txt. The kernel is a direct fork of Charles Forsyth's [Plan9-9k][plan9-9k], according to /doc/license/NOTICE.Plan9-9k.txt. Original kernel code is released as GNU General Public License, Version 2. New tools and improvements ported from 9front are subject to the MIT license as explained in /doc/licence/9front-mit.txt. New libraries and programs that use Plan9 libraries as system libraries can be subject to different licenses, as documented in the respective sources. ## New System Libraries ## Some new libraries designed for use within Jehanne are released under GNU Affero General Public License, Version 3. They can be linked as "System Libraries" for use within Jehanne. ## Additional Licenses ## Jehanne contains a number of third-party packages under various licenses. They are retrieved from their respective sources - licenses for these packages are not included here, but should be available from the respective directories in /sys/src, /pkgs or /hacking. [Plan9]: https://9p.io/plan9/index.html [brho]: https://github.com/brho/plan9 [harvey]: http://harvey-os.org "Harvey OS" [9front]: http://9front.org/ "THE PLAN FELL OFF" [plan9-9k]: https://bitbucket.org/forsyth/plan9-9k "Experimental 64-bit Plan 9 kernel"