Questions tagged [gpl]

The GNU's General Public License, a commonly-used free software license. The GPL has various versions, v1-v3, so use this tag only for questions talking about overarching issues of the licenses or shared characteristics. For example, for a question about a unique section on version 3, use the [tag:gpl-3] tag.

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1answer
254 views

Can I use PyQt if I make it open source and only charge customers for my time to customize the open source app for them?

I am planning to create custom made software for each customer. I will also be telling the customer that I shall be making it open source and they are simply paying me for my time to package things ...
0
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2answers
286 views

Am I allowed to use a GPL-3 library in a closed source web application?

I am working on an Angular5 web application. It is written in Typescript, and then compiled to Javascript. This is not a real compilation, just a minification The server which serves the .js files is ...
6
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1answer
481 views

Using GPL licensed library over a service for non-GPL softwares

I want to use a GPL v2 licensed library(esper) for commercially distributed non-GPL softwares but I need to make sure non-GPL software not violate GPL license. Can I use this library indirectly using ...
12
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2answers
651 views

Is Stack Exchange's CC-BY-SA v3.0 content compatible with the GPL?

Currently, all user submitted content is licensed under "cc by-sa 3.0 with attribution required". This shows up at the bottom of each page: user contributions licensed under cc by-sa 3.0 with ...
6
votes
1answer
517 views

Is every license that is GPLv3-compatible also AGPLv3-compatible?

The GPLv3 and AGPLv3 are quite similar. They differ only by an additional requirement in the AGPL that makes a network service powered by a modified AGPL-licensed work operates like conveyance of the ...
1
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1answer
42 views

Distribution and display at fairs / exhibitions

My question is simple: is displaying an unreleased product containing open source software at an exhibition considered distribution? In particular, I am concerned about GPL obligations. If the ...
3
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2answers
151 views

What additional benefits does the DCO provide?

If my project has a lax license (like Expat/MIT), I can enforce "inbound=outbound" by requiring that contributors sign off their commits in order to acknowledge the Developer Certificate of Origin. I'...
1
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0answers
110 views

Building programs using qmake

Can I use qmake to build Non Qt programs with a closed source or MIT licence? The c++ code that I'm building does not include any Qt headers or link to any Qt libraries. The only mention of Qt in ...
2
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1answer
94 views

(A)GPLv3 - 'covered work' and 'based on'. is it really viral?

In AGPLv3 and GPLv3, clause 5c says: You may convey a work based on the Program, or the modifications to produce it from the Program [only if you] license the entire work, as a whole, under this ...
0
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1answer
153 views

How is the FreeBSD project able to legally distribute GPLv2 software?

FreeBSD publishes "ports" (FreeBSD's term for packages) of software covered by the GPLv2, such as MySQL 5.6. The GPLv2 states: You must cause any work that you distribute or publish, that in whole ...
2
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1answer
157 views

Is source code required to be published if a program embeds GPL software?

ExpressVPN, a free VPN service, embeds OpenVPN and LZO inside its iOS application. These two pieces of software are both licensed under GPL. To my understanding, ExpressVPN must make source code ...
1
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0answers
62 views

GPL Wrapper around Closed Source Assemblies

So I have been using this software for quite some time. AdvancedHMI According to sourceforage page is is licensed under GPL v2. At AdvancedHMI.com it states How is AdvancedHMI licensed? A: ...
1
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2answers
795 views

Is selling a cloud service based on a Docker image considered distribution from GPL's viewpoint?

I have read some topics about GPL, Docker images and distribution. As far as I understand you have to provide the source code of all GPL licensed programs within a Docker image but not your own ...
1
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1answer
60 views

Clarification on use of GPL open source code

I am a little confused around the restrictions surrounding my use of existing (GPL) open source code. I plan on using open source code (GPL license) to build an application - my plan is to use and ...
2
votes
1answer
305 views

How do I combine MIT licence with GPL?

In my project there are a few library files that I would like to release under the MIT license. The rest of the project is released under GPL. How can I make it clear to someone who reads one of the ...
2
votes
2answers
469 views

What is the license of LibreOffice?

According to https://www.libreoffice.org/about-us/licenses/: LibreOffice is made available subject to the terms of the Mozilla Public License v2.0 which is reproduced below. It is based on code ...
1
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1answer
86 views

Using a GPL external executable within a commercial web application

I want to develop an idea for a commercial web application. To provide that service (and get paid for it), I need to use an external executable software somewhere in the process, which is licensed ...
1
vote
1answer
207 views

Is it permissible to install Cygwin (GNU GPL) and its packages from within an installer for a proprietary and commercially sold application?

Is it legal to package the Cygwin installer executable — and some of its corresponding packages — and run it from another installer that installs a proprietary and commercially sold application? ...
0
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0answers
363 views

Can I use GPL-licensed software in a commercial program?

Can I use GPL-licensed software in a commercial program? I know that the use of source code in a commercial program is forbidden but if I use system call functions for example I make the call a bash ...
-1
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1answer
566 views

Is it legal to multi-use a 100% GPL theme from ThemeForest?

If you go to the Google search site:https://themeforest.net/item/ This item is licensed 100% GPL, you will find a lot of GPL themes. Is it legal to use a theme which I buy once in multiple sites? (...
2
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0answers
65 views

Proper place to include the license of a dependency

I'm developing a GPLv3 project, and i need to use both the feather's icon set, licensed with MIT license, and the PyQt5 library with GPL. I don't need to rewrite or extend any content of the these ...
3
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1answer
99 views

Does a (L)GPL3 device still need to provide it's original service after modification?

Let's assume I am building an embedded linux device using amongst other things (L)GPLv3 software. The device is sold to non-business users so the anti tivoization clause applies. I want to be ...
2
votes
1answer
150 views

VLC and VLCJ licenses

I'm confused about the licenses GPL and LGPL. I see that VLC is released under LGPL license since sept 2011: https://www.videolan.org/press/lgpl.html. But VLCJ, which is a Java wrapper on top of VLC, ...
-2
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1answer
46 views

Free Pascal and LGPL

I want to modify this program and compile it using Free Pascal compiler. The above program is licensed under GNU General Public License version 3. I know little about Free Pascal, and reading the FAQ ...
2
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2answers
1k views

Using a GPL header in a closed source program?

I've recently noticed that some of the userapi linux kernel headers are declared under the GPL. However, I'm pretty sure that you can include linux uapi headers in your code without your project ...
2
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2answers
125 views

How to benchmark GPL software?

I would like to create a benchmark that compares several open-source implementations of a particular functionality. Some of those implementations carry a GPL license, while others are more open: ...
4
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1answer
211 views

Moving project from AGPL to Apache v2 / MIT license

The question in a nutshell Hi! Together with a team of brilliant engineers we've been building a software project (http://luna-lang.org) for the last two years and now we want to release everything ...
4
votes
1answer
537 views

Bundling JetBrains OpenJDK in closed source software

I am developing a software that comes bundled with JDK. I am planning to use JetBrains OpenJDK for this purpose as it comes with swing support for HighDPI monitors. JetBrains OpenJDK can be found in ...
0
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0answers
135 views

How could other people know that I'm using GPLed libraries in my application?

I know nothing about GPL before, and I am living in a country that doesn't have much care about licenses either. I am studying this GPL thing today and I came to know that when I am using a GPLed ...
3
votes
1answer
75 views

Licensing concern for an application?

I'm looking for advice in regards to licensing. I started coding an application in my free time for some months now. It began as coding practice, but as time progressed it got more serious and there ...
3
votes
1answer
336 views

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 ...
8
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2answers
361 views

Relicensing from GPL v2 to LGPL v2 - What if I can't contact all contributors?

I am a contributor to a very old project presently in violation of the GPL. Our project is a plugin for a closed-source program, but the GPL does not permit this kind of linking. The project should ...
3
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1answer
110 views

How does GPL work for articles on a website?

Suppose I own a website and 3 people are writing articles on the site including myself. My question is whether I can use a GPL license for the articles I write? What happens if I write an article and ...
-3
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1answer
341 views

Difference between GNU-GPL and BSD?

I was wondering what is the difference between these two licenses? I have looked around for GPL but in some places they say you have to post your code to public and in some places they say you don't ...
6
votes
1answer
833 views

Can I put ads on a GPLv3 project and upload it to Google Play?

I forked a messaging app on github and added my modification on top of it and it started to build an audience in my country because of the unique ad-on feature I have added. The app acts as an SMS ...
1
vote
1answer
432 views

Can I modify and resell themes which are on WordPress official theme directory (100% GPL)?

According to WordPress Licensing & the GPL, themes on the official WordPress theme directory should be 100% GPL: If you wish to submit your creation to the free theme repository on WordPress....
2
votes
2answers
318 views

Can I distribute signed binaries of someone else's GPL'd code without distributing the private key?

Suppose I come across Project X on the Internet, which is released under the GNU GPL. I want to compile Project X into a strong-named .NET assembly, which is a type of cryptographically signed binary, ...
4
votes
3answers
70 views

How does one structure a C# OSS project to be accessible to wide ranging group of developers?

I'm looking at figuring out how to deal with C# projects in open source sanely. Visual Studio is both backwards and forwards incompatible, so everybody in the project has to use the same version, if ...
6
votes
2answers
235 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 ...
3
votes
1answer
82 views

The GPL states that its text should be reproduced verbatim. What does this mean?

I made a bit of GPLv2 archaeology for some work I do to help clarify the Linux kernel licensing. In doing so I found at least six versions of the GPL 2.0 texts published by the FSF over the years. ...
13
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2answers
3k views

How is the BSD GPL-compatible?

The BSD license says that derivative works may be distributed under the following conditions: Redistribution and use in source and binary forms, with or without modification, are permitted ...
3
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2answers
311 views

If some software states it is BSD-licensed, how can it be distributing itself with GPL/LGPL components?

For a specific example relating to my question, I offer VisIt. Per the licensing information for VisIt, it is stated that it is BSD-licensed. But, looking over the libraries used in VisIt, it can be ...
-2
votes
1answer
106 views

Does violating the “four essential freedoms” of the FSF mean you are violating GPL? [closed]

I was reading over a products license information and found out that they use multiple iterations of the GPL license (GPL v2, LGPL, a few more). I was wondering if the product that is licensed ...
4
votes
1answer
134 views

How to best deal with email suggesting an attempted/pending gpl violation

I received the email, reproduced below, requesting a new feature in one of my gpl programs, which this company would then build into one of their closed-source products (see the email for details). ...
3
votes
1answer
228 views

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 ...
1
vote
2answers
40 views

Raspbian as OS of a controller module of a machine

I'd like to use a Raspberry Pi as a controller of a rather complex medical machine. For several reasons, most prominently safety reasons, it is out of the question, that we could give the source code ...
7
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1answer
524 views

What is the purpose of “or (at your option) any later version”? What if I don't want this?

Firstly, what is the exact purpose of the phrase "or (at your option) any later version" that usually accompanies GPL-licensed software? I get that it's supposed to be to allow future freedoms to be ...
-1
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1answer
286 views

If I build a smart bomb with Linux inside, is it enough to put the GPL text in the firmware to comply with the GPL?

If I build a smart bomb with Linux inside, is it enough to put the GPL text in the firmware to comply with the GPL if I drop the bomb? I reckon that when I sell my bomb to the military, they are ...
1
vote
1answer
101 views

GNU GPL v2 - Using libraries?

I had a question about the GNU General Public License v2 license. More specifically, I'm using a library with a GNU GPL v2 license. I'm merely importing it in Java through Maven, I'm not ...
5
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1answer
600 views

Can a video game have a GPL licensed engine and GPL-incompatible licensed assets? What about scripts?

I've heard that it's possible to use a GPL game engine that interprets/loads/JITs a so-called Game Pack which contains all the important game files such as sprites, sounds, music, levels, missions, ...