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I am starting a web API for my school and I was wondering what licence would be most appropriate?

The goal is to have an open source application that can be freely shared with other school but prohibits it's use for commercial applications (basically to protect from companies who make software for schools).

The application just manages tutoring assignments for tutors, students and the school administration.

I did find this link: "Free for academic use" license, but since it was 3 years old I thought it might be a good idea to ask again.

migrated from stackoverflow.com Nov 13 '15 at 12:51

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The open source definition does not allow discrimination against fields of endeavor, and you can't disallow commercial use if you want a license that meets the open source definition.

An option is to go copyleft, which ensures that anyone who distributes software based on that software must follow the same license. It's possible (though tricky) to do that commercially, but your software and any published derivative works by others remain open source, and free for others to use as well.

Well-known copyleft licenses are the GPL, AGPL, LGPL and MPL. Since you describe the project as web-based software, the AGPL might be suitable. This license requires people who let users interact with derivative software over the internet (for example through a web API) to publish their software under the AGPL as well.

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The Open Source definition includes (point 5) "No Discrimination Against Persons or Groups" and (point 6) "No Discrimination Against Fields of Endeavor", so such a license wouldn't be open source. The Free Software Definition's Freedom 0 ("To run the program for any purpose", which includes for running a school o a company) covers this.

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    Not only against the spirit, also against the letter, even if educational or commercial use are not explicitly listed. – Martijn Nov 13 '15 at 14:28
  • @Martijn, i do understand that it is forbidden as part of the 4 freedoms, but I can't put my finger on exactly where. – vonbrand Nov 13 '15 at 18:53
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    Freedom 0: the freedom to run the program for any purpose - whether that purpose is to run a company or a school. – MadHatter Nov 15 '15 at 7:09
  • @MadHatter, I stand corrected. Editing my answer. – vonbrand Nov 15 '15 at 11:28
  • Well, you could try to construct something out of "if the program's users" - maybe there is a way for you to decide about who (or what) gets to be a user? – Michael Schumacher Nov 16 '15 at 15:28
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A CC BY-NC-SA (Creative Commons Attribution-NonCommercial-ShareAlike) licence may work, because you want it to be as free as possible without allowing it to be commercial.

  • That is not "school only"... – vonbrand Nov 16 '15 at 2:12
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    However, @superpat wanted something that "prohibits it's use for commercial applications", not necessarily just for school. – AccioBooks Nov 16 '15 at 2:16
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    It's quite unclear what Non-Commercial actually means (which is a problem in itself), but under most interpretations, schools would not classify as non-commercial use. – Martijn Nov 16 '15 at 11:08
  • @Martijn what? I wouldn't be surprised, but I think it depends widely on the jurisdiction. – Zizouz212 Nov 16 '15 at 21:37
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    @Zizouz212 what constitutes non-commercial use is not really defined, but check paragraph 3 of page 63 of mirrors.creativecommons.org/defining-noncommercial/… If I were a school, I wouldn't touch NC material. – Martijn Nov 16 '15 at 21:58

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