Questions tagged [multi-licensing]

Works can be released under two (or more) licenses, which may or may not be compatible, giving recipients the choice of which terms they will abide by

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Using partially open source program/s and non open source programs, together in a project to be commercial?

In my case I'd like to use an open-source music program to make some music for an android app. When I later want to publish this app on the app store, this does mean I cannot use a normal copyright ...
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5 votes
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What does the Zstandard dual license mean?

I am looking at the Zstandard library and it says that it is dual licensed, BSD and GPLv2. What does it mean? If I use libraries in a non open source program will the license be GPL or BSD? In the ...
Goozo's user avatar
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2 votes
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Dual licensing of a file

My project is licensed under GPLv3. However, I want some files to be dual licensed under GPL and Apache License 2.0. What to write: a. in the header comment of the file licensed under Apache License ...
porton's user avatar
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Using OSS of different licenses in MIT-licensed software

If I create a new MIT-licensed OSS project and use other software with different licenses (MIT, GPLv3, no license), what is the best way to create a compliant repository? We thought of adding a ...
Ice09's user avatar
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Explanation about open source codes and licences

I need to understand rules that I only read but never understood completely. I'm asking here some clarifications. I read that GPLv2 licence imposes that a developer, developing a software using codes ...
SPS's user avatar
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Dual license or relicense when the new license is more permissive?

An organization is considering changing the license of an OSS repo on GitHub. For the purposes of this question, assume that organization has the legal rights to change the license. It is currently ...
kdopen's user avatar
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How can I integrate open source licenses, such as MIT, into my own open source project when my code is unlicensed?

I want to use a portion of an existing project that is licensed under MIT. MIT seems to state that I must include their license in my work, but I don't want to use any license for my own work (i.e. ...
Quolonel Questions's user avatar
4 votes
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Can my thesis LaTeX source files contents be under GPL v3?

I want to release all the LaTeX source files (*.tex), when I publish my thesis. I do not want to just release the PDF. So everybody can build my thesis with a LaTeX compiler from its source code. Can ...
user's user avatar
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11 votes
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Is it possible to restrict GNU GPLv3 to non-commercial use only?

I've noticed that the jQuery plugin "Fancybox" has a peculiar licensing note in its header: // Licensed GPLv3 for open source use // or fancyBox Commercial License for commercial use // // http://...
Alexander Rechsteiner's user avatar
3 votes
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Using my own code fragments in multiple projects: does this count as multi-licensing?

I'm working on different open source projects, to which I'm contributing code which sometimes overlaps. Does this count as multi-licensing (and if so, do I have to make note of this explicitly)? Or ...
Michael Clerx's user avatar
24 votes
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Do Stack Exchange’s ToS mean that the user-generated content is double-licensed to them?

In the ToS of Stack Exchange sites, under the section Subscriber Content, the first sentence states that my submitted content is licensed (to Stack Exchange) under CC BY-SA 3.0: You agree that all ...
unor's user avatar
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Can software be both MIT licensed and in the public domain?

docopt.rs is dual-licensed under the MIT and Unlicense. How can the software be both copyrighted and in the public domain? Is this an example of invalid licensing?
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Keeping contributions and allowing free use of libraries. i.e. Complex licencing issue

I have an idea for a modern compiler project which will involve, at least at the start: A driver program. A set of libraries that implement the compiler, much like LLVM/Clang. A runtime library that ...
Luke A. Guest's user avatar
7 votes
1 answer
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How to Audit licensing of old project?

I manage a project with a very long open source history - Zikula (and https://github.com/zikula/core). Zikula grew out of PHPNuke and PostNuke. Most of the oldest code is long gone, but some legacy ...
craigh's user avatar
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Open Source (A)GPL(2|3) but limit resources or business for others without a paid license [duplicate]

I want to release come kind of computation engine as an open source project. For the whole source and usage, I am fine with the content of the GPL but what I want to make sure: There should be a ...
Tom Freudenberg's user avatar
3 votes
1 answer
399 views

Dual Licensing - AFL/GPL

I would like to use a library that is dual licensed: library is licensed to you under your choice of the Academic Free License version 2.1, or the GNU General Public License version 2 (or, at your ...
ossx's user avatar
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4 votes
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License similar to GPL, but allowing to incorporate into the commercial version

Continuing this question: I want a license L which is generally like GPL, but allows us to do the following: License our software under both L and a commercial license. Require that every patch (or ...
porton's user avatar
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7 votes
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Can I dual license my code under the AGPL and the CPAL? If so, how?

I'm beginning work on a web application at the moment which ideally I'd like to dual license under the terms of the AGPL and the CPAL. This would mean that anyone using the code in their own web ...
Danny M's user avatar
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3 votes
1 answer
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Is it safe to use FreeType inside a proprietary closed-source software?

Many of libraries, that have LGPL or permissive licenses, depends on FreeType, that have multi-licensing (FTL/GPL). My question is: if FreeType can be used under any of these licenses, can someone ...
Gosha U.'s user avatar
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2 answers
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For applications using the paid/community model, why not just fork?

Some applications made by commercial companies employ a paid/community model for their software, meaning that you can use the open-source "community" version with less features, or you can purchase a ...
Mark Aldrich's user avatar
7 votes
2 answers
559 views

Is it legal to use code from Microsoft Knowledge Base Article in an open source software?

In an open-source software project, GPL2 or 3, is it legal to use code snippets from Microsoft Knowledge Base articles - the ones that used to be called something like Q1234567, nowadays called just ...
Hrach's user avatar
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2 votes
1 answer
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License header for CSS/JS resources

I'm creating a template for a company and fetching all vendor libs and selfmade code together to one minified style.css and script.js. My question to you is: Is this following license header legal? /...
rjgamer's user avatar
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11 votes
1 answer
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As owner of GPL library, can I break the licensing terms?

As far as I understand, choosing GPL licence for library does not permits use of it in proprietary programs as opposed to LGPL. So releasing my library (or code classes), I'm forcing people to use ...
kenorb's user avatar
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4 votes
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Licensing under "version X or later"

Is it a GPL-only thing or can I use this formulation with any license, like "MPL 2 or later"? Does it mean that in case versions 1, 2 & 3 of license are available, "version 1 or later" effectively ...
ZeroUnderscoreOu's user avatar
5 votes
2 answers
330 views

Under what conditions can someone dual licence existing works?

When software is diffused under an open-source licence I imagine that a project becomes the "intellectual property" of the community. However, I'm not clear about this answer in that an author agrees ...
James P.'s user avatar
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2 votes
1 answer
110 views

Can open and closed source versions of software exist in parallel and can code be ported either way?

Say a vendor has both a community version of their software and a more proprietary one. How can this be done in licensing terms? Can code be ported either way? What are the appropriate practises if ...
James P.'s user avatar
  • 375
3 votes
2 answers
2k views

GPL, LGPL or MPL for open source app with closed source Pro flavour

I have had a fairly popular Android business app on Google Play a while now. It is available as a free version and a version with features targeted to bigger businesses. I am currently in the process ...
SiCN's user avatar
  • 139
5 votes
2 answers
251 views

Licence for open-source code which is part of proprietary code?

I've a proprietary program which is using OOP classes which I want to publish as FOSS (only the classes). Which FOSS compatible license I can choose for the classes which will work with my ...
kenorb's user avatar
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10 votes
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What is the meaning of two licenses in a maven pom?

Maven allows several licenses in its license block e.g. <licenses> <license> <name>GPL-3.0</name> </license> <license> <name> Beerware</...
openCage's user avatar
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Possibility of non-commercial ‘open-source’ and attribution based licence

I am currently planning to launch an alpha version of the software as a representative of an unregistered company. We (currently I'm the only person on the team) do not have any patents and are not ...
Prasad Raghavendra's user avatar
7 votes
2 answers
3k views

Combining GPL with non-commercial license

I've been a hobbyist programmer for a long time, and only recently have I been writing code I've thought others might benefit from. Here's my conundrum: I'm a big supporter of the GPL, and I ...
john12tucker's user avatar
4 votes
2 answers
126 views

JPEG comment to convey Copyleft Multi-Licenced Copyright Notice

This question is related to Copyleft Multi-Licenced Copyright Notice. I upload pictures on commons.wikimedia.org and I want to facilitate the reuse but I want derivatives stay "libre". Therefore I ...
oHo's user avatar
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3 votes
2 answers
106 views

Copyleft Multi-Licenced Copyright Notice

I want to allow any usage/modification/distribution of my work except with the restriction that my work and derivatives must stay "libre". Therefore I think the right way is to publish my work under ...
oHo's user avatar
  • 175
8 votes
2 answers
2k views

License header for dual-licensed (AGPL or "non-free") source code

For one of my products I plan to move from a commercial-only to a dual licensed license model: GNU Affero General Public License (AGPL) or a "non-free" license. I can imagine two options for the ...
mjn's user avatar
  • 183
7 votes
2 answers
668 views

Using GPL-ed library from code with more permissive license (MPL-2)

I'm writing a library and a tool on top of it, and I would like to release both under MPL-2. However, the library has an optional dependency, another library which is released under GPL (not LGPL). I ...
gavv's user avatar
  • 402
9 votes
2 answers
740 views

Does it make sense to license my content under a more restrictive license if it's licensed CC-BY-SA?

Let's say that I make a post on a Stack Exchange site. That content is owned by me, but I gave the company a perpetual and irrevocable license under Creative Commons Attribution Share Alike 3.0. As ...
Thomas Owens's user avatar
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9 votes
4 answers
699 views

If something is licensed to me under two (Open Source) licences, can I redistribute under only one?

I have modified a particular file (A LaTeX Beamer Template) The readme says: The code of the package is dual-license. This means that you can decide which license you wish to use when using the ...
Frames Catherine White's user avatar
1 vote
1 answer
164 views

How can I create my own fork of Creative Commons license for a book - educational use [closed]

How can I create my own educational license for my scholar books? I'm thinking in a fork of CC BY-SA-NC + educational use. What should I have in mind before write the license? These is our draft for ...
Colomet's user avatar
  • 27
15 votes
3 answers
250 views

Can paid-for Open Sourcing be a viable model for a freelancer?

Open sourcing doesn't necessarily mean that you give away your source code for free. I am wondering about the business model where your code is made public, free for personal/hobby use, but with a ...
Yves Daoust's user avatar
89 votes
2 answers
19k views

Why is CC BY-SA discouraged for code?

Everybody knows that you shouldn't use a CC BY-SA license on your code. Even the Creative Commons folk recommend against it. What I don't know or understand is why. I can't seem to find any ...
RubberDuck's user avatar
  • 5,388
4 votes
2 answers
262 views

Commercial AGPL application

I'm developing an application using iText. iText, unless a commercial license is purchased, forces you to abide by the AGPL. My plan is to sell commercial pre-compiled copies of my software at a small ...
pixlepix's user avatar
4 votes
2 answers
170 views

Do anything with this free beer except generate revenue, for that you'll need to purchase an additional beer license?

Background I'm working on a talk, complete with an accompanying resource pack and website. I've never released anything I believe to be of some actual significant monetary value to anyone else before ...
Luke's user avatar
  • 221
18 votes
5 answers
2k views

May someone else apply a license to CC0 material?

Alice licensed her work under CC0 1.0. May Bob take Alice’s work and publish it under another Creative Commons license (e.g., CC BY-SA)? If yes, may Bob publish it under his own name (i.e., not ...
unor's user avatar
  • 5,590
8 votes
3 answers
267 views

Licensing Community Wiki Posts at Stack Exchange

A while back, I ask this question: Can I Override a licensing Policy? I determined that instead of stating a license on a profile page, it dual-licenses the content posted by that user, instead of ...
Zizouz212's user avatar
  • 6,409
2 votes
2 answers
354 views

License for Graphics Design Program

I've written a Graphics Design program, with less functionality than Photoshop, but more than MS Paint. I've targeted the application towards teenagers and kids, mainly for educational usages for ...
Zizouz212's user avatar
  • 6,409
11 votes
3 answers
624 views

Can I apply one license to specific users and another to others?

Suppose I am a developer. I am developing a piece of software. I decide I want to make this code open source. But... I only want developers (or people that will be using the code in other projects) to ...
Trevor Clarke's user avatar
8 votes
1 answer
216 views

How to license Stack Overflow contributions as permissive as possible? [duplicate]

Important: this related Meta Stack Exchange post. Code you post on Stack Overflow is licensed "cc-by-sa 3.0 with attribution required". Now this may pose problems for people wanting to use my ...
Jeroen's user avatar
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40 votes
3 answers
1k views

Can I "Override" a licensing policy?

On many sites, especially Stack Overflow, I can't help but notice such amazing code snippets. However, they come with a "catch" designed by the author. With user contributions being licensed with the ...
Zizouz212's user avatar
  • 6,409
8 votes
1 answer
348 views

Dual license compatibility

Suppose I place work I publish under two licenses. If the two have conflicting attributes which property should be used. Can you specify which properties you want two be applied from the two licenses?...
Trevor Clarke's user avatar
21 votes
2 answers
378 views

Will a dual license lock me in to a provider?

I want to use open source software for my business, and it is dual licensed. If I choose the paid license which provides support for any changes we require, will this mean that we are unable to change ...
trichoplax is on Codidact now's user avatar