Questions tagged [copyleft]

For questions about the copyleft concept (also known as Share-Alike), a concept that promotes or enforces the use of the same or compatible license for derived works.

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68 views

Can I use a data file covered by MPL in a closed source commercial program?

I would like make use of the certifi library in my project, but I am not allowed to use any copy-left libraries, and certifi is MPL. Really the certifi library just provides a pem file of a bunch of ...
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1answer
164 views

CC BY-SA – Do I need to open source my app if I don’t really distribute it?

I started developing a commercial web application that uses spaCy – a MIT-licensed library for natural language processing. In order to use this library, one needs to initialize a processing pipeline ...
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0answers
63 views

Licensing auto-generated code under MPL 2.0?

I am writing a specialized binary file parser using Kaitai Struct. In brief, the file formats are described in YAML documents according to a custom spec called KSY, which are then passed to a code ...
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1answer
76 views

Open source components in a larger one-off system setup

I'm in the early concept and planning stages of a large-ish interactive installation. The installation is a one-off for a large client; think a mix between science museum interactive stands/kiosk-type ...
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1answer
164 views

If I include a ShareAlike/GPL/viral-licensed character in my videogame, is my videogame stained?

I'm making a video game with importable custom characters. My characters have a special license that forbids pornography and blasphemy in derivative works. It is viral in itself to prevent such acts. ...
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1answer
92 views

Is copyleft triggered for a backend service with GPLv3 dependency dynamically linked, if the backend exposes public API endpoints for mobile client?

I'm trying to figure out if GPLv3 copyleft is triggered for the following scenario: A company has a backend service written in a dynamically typed programming language. The service has a bunch of ...
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1answer
122 views

Why doesn't the loading of GPLed JS in the browser count as distribution?

Let's say I have a GPL web app. Somebody forks it, adds some back end changes and hosts it. In theory, the person installing it is the user so they need the modified source code, not the people ...
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1answer
67 views

Ways to avoid section 10.2 of MPLv2

I am looking for a copyleft license. My issue with GPLv3 is that it is so hard to understand. I don't want to license my work under terms I do not even understand. Fundamentally, I don't understand it ...
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1answer
74 views

What legal considerations needs to be made for distributing a commercial/closed source software which utilizes LGPLv2 open source libraries?

I am developing a Java web application which utilizes Open source libraries with LGPLv2.0 and v2.1 libraries without any modification. For distributing this software commercially, what legal ...
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1answer
475 views

How does share-alike play with commercial use?

I'd like to know how a licence can both allow commercial use and be share-alike. My reasoning is as follow : If we use it in a product (which is authorized by the "commercial use" part), we have to ...
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1answer
71 views

GPL copyright owner copyleft [duplicate]

If a GPL owner decides to make their code close sourced, say to make a derivative work for themselves (maybe commercialize), what steps should they take? If they need to rewrite their code, what ...
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1answer
93 views

Is it possible to have a non-comercial license, while allowing commercial use of derivative works and further modification of the derivative work?

This is a somewhat complicated situation, and I have trouble finding a Creative Commons license that is appropriate. Here is what I want the license to do: Others should be able to redistribute my ...
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1answer
83 views

How to use GPL-licensed project with MIT code snippet license correctly?

My company uses WordPress (GPL license), a child theme of a theme and plugins under GPL and just a few code snippets under the MIT license. Because the GPL license is the stronger license (MIT license ...
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1answer
77 views

Compliance issue with drools-compiler including Eclipse ECJ

We have an dependency to drools-compiler (Version 7.19.0.Final) in one of our microservices: // Drools Compiler :: https://mvnrepository.com/artifact/org.drools/drools-compiler libraryDependencies += &...
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1answer
76 views

What does AGPLv3.0 section 7f mean and can you give an example of its use?

In section 7 of the AGPLv3.0 there is the possibility to make limited changes to the license. I don't think I understand the changes allowed by subsection f) and I have certainly never seen it ...
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1answer
131 views

Can you make GPL-licensed software using the Tizen SDK?

Unfortunately, Tizen has a proprietary SDK, as discussed here, which mandates that: You may not use any component part of the Tizen SDK in any way independent from the Tizen SDK. You may not load ...
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1answer
40 views

AFL - obligation to distribute source code of derivative work?

AFL license states that "Licensor agrees to provide a machine-readable copy of the Source Code of the Original Work along with each copy of the Original Work that Licensor distributes. [...] As ...
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2answers
173 views

Copyleft license that explicitly disallows monetisation [duplicate]

I plan to open source a full-stack project (hardware schematics + firmware). I want to find a way of open sourcing it with a copyleft-style license that allows anyone to use, modify, and redistribute ...
1
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1answer
594 views

GPL with license exception for iOS?

I'd really like to use the GPL license for my cross-platform mobile app. I want to publish on the iOS AppStore, the terms of which indirectly prohibit the GPL from being used. What's the best way to ...
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1answer
145 views

How do Wikipedia licenses, CC-BY-SA and GFDL differ?

Wikipedia licenses most of their text and images under two licenses, CC-BY-SA and GFDL. We can choose either of the licenses while using the work. I know both of them are copyleft licenses and ...
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1answer
1k views

Using iText library with AGPL license to make application open sourced

I am working on a project to generate a 508 compliant annual PDF Publication from our database using iText 7 java library. This library works great for accessible PDFs. We are in the process of ...
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1answer
33 views

Use of a derivative of aGPL v3 licensed software as a single binary in my product

I intend to release a software product (package) that shall include an executable (binary) that makes use of a library licensed under GPL v3. The executable is not linked (neither statically nor ...
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0answers
36 views

Is use of Creative Common's BY-SA licensed database in software 'adaption'?

I am building a functionality in my propriety software for translation of names between Spanish (and other languages) and English. The translation function works by typing words in Spanish which then ...
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1answer
222 views

How much of my code becomes GPL if I use some GPL code and how different does my code have to be to not be GPL?

I'm new to coding and I've found a lot of useful information regarding this question by reading online, but for whatever reason I simply can't find a simple answer to this. It's about using other ...
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2answers
71 views

Copyleft licenses that do not mandate free distribution?

The GPL tries to guarantee that a piece of software, and all derivative versions of that software, will allow anybody to use, study, modify, and distribute the software however they choose. I think ...
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1answer
171 views

Why is the zlib license not considered copyleft?

The final term of the zlib license state This notice may not be removed or altered from any source distribution. However, the Wikipedia page lists Copyleft No The way I understand the above ...
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1answer
77 views

How can an AGPL library be more permissive when using the library's public APIs?

Server-client based HTTP open-source projects like MongoDB use AGPL/SSPL for their main backend implementation and use a more permissive license for their client so that devs embedding MongoDB clients ...
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1answer
55 views

Is there a more radical approach against copyright than copyleft?

Up until recently I thought that copyleft supporters totally reject the concepts of copyright and content licensing but now I know that they don't totally reject these and their main goal is to ...
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1answer
35 views

How to control content changes under a CC BY-SA

I am writing a fiction whose goal is to bring the reader to examine her/his political beliefs in the light of various political implications and then to arrive, on her/his own, at possibly different ...
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0answers
34 views

How is "GPL-2 | GPL-3" to be interpreted?

A lot of packages in R (and I'm assuming in other languages as well) are licesed as "License: GPL-2 | GPL-3". Others as "GPL (>= 2)" and others as "MIT + file LICENSE"....
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0answers
31 views

Dual license GPL/non-commercial + commercial SDK license

Looking to release an open-source SDK, all of which uses novel code OR dependencies that are MIT/Apache. For the business model, I would like to sell commercial-use licenses for use with the SDK, ...
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0answers
20 views

can I use CC BY-SA 3.0 media (pictures) in a software partly licensed under a non-derivative license?

I am working on a software wich contains graphics i didn't make that are licensed under CC BY-SA 3.0. since the software contains other parts I didn't make, I want to put it under two different ...
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2answers
150 views

Am I violating the terms of the base licenses when I publish my project on GitHub without any license and/or links to authors of used components?

Many developers, students, etc. put their code on GitHub without any links to authors of used components and licenses. I tried find a new job and yesterday HR ask me create Rest API with django + drf ...
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2answers
91 views

Extremely copyleft licenses enforcing redistribution of source code intended for internal use

I would like to release my software under stronger copyleft than GPL (and AGPL), namely I would like to impose the burden of releasing sources of any derivative work, even the work intended for ...
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2answers
36 views

Is it possible to have an MIT-licensed directory inside an MPL 2.0 repository?

I'm licensing my project under MPL 2.0, but I have a certain directory for utilities that I don't want to be under copyleft. If I put an MIT license in the said directory, can it override the MPL 2.0 ...
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1answer
50 views

What counts as disclosing source for software licenses?

MPL v2, GPL v3 and other licenses alike require giving users access to source code. Having read both licenses, I did not come across specific examples of how to disclose source code, so my question is ...
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1answer
245 views

What's "use CDDL for things already under CDDL" mean?

Circa 2006, blogs.sun.com/chandan/entry/copyrights_licenses_and_cddl_illustrated says, in comparing EULA, GPL, CDDL and BSD, that one must "use CDDL for things already under CDDL". But what does it ...

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