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 [gpl-3] tag.

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LGPL license for shotwell, VLC media player

Just curious to know, why are the programs shotwell and VLC media player released under LGPL? Maybe because that they are written just not for Linux, but for other proprietary operating systems too? ...
infoclogged's user avatar
8 votes
2 answers
955 views

Under what licenses can I release open source software that uses PyQt?

Situation I have two software packages for which I need to choose a license and I'm not sure if they get along with the PyQt licensing schema (which uses the GNU GPL). Package A uses PyQt in a sense ...
a_guest's user avatar
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4 votes
1 answer
361 views

Implications of using Linux's Kbuild infrastructure in proprietary software

We have our own proprietary software that we are developing for commercial business. We want to sell the software and we do not have any problem in distributing the source code to our customers. Due ...
Amit Virdi's user avatar
-1 votes
2 answers
208 views

What happens to Cloud providers, if I download a GPL Binaries from cloud storage service?

1) For example, if I upload a GPL binary to google drive and then provide a link for everyone. Does it mean that GOOGLE should now provide the sources for the binary if anyone requests them? 2) What ...
Tzahi's user avatar
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1 vote
2 answers
1k views

Does the GNU GPL imply that I hold copyright?

Would it be possible to release my copyright (essentially put it in the public domain) but still have the software licensed under the GNU GPL?
user avatar
1 vote
1 answer
234 views

I have a CECILL and GPL software together with my closed-source software. Can I distribute them together?

1) My closed sourced software calls the GPL software on the command line like so: GPL.exe file. GPL produce output to stdout with the result. My closed source software reads the GPL output. Can I ...
Tzahi's user avatar
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1 vote
2 answers
100 views

Why is the GPL itself unmodifiable? [duplicate]

I noticed today that the GPL has a copyright notice that reserves copyright AND disallows modification: Copyright © 2007 Free Software Foundation, Inc. http://fsf.org/ Everyone is permitted to ...
wooobie's user avatar
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11 votes
2 answers
6k views

Is a Web application "released" in the sense of GPL?

In the sense of GPL, is a Web application running on a private server without exposing its code considered "released"? (or is the word "distributed"?) Therefore, if a GPL component is used in a Web ...
porton's user avatar
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4 votes
2 answers
331 views

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
  • 579
1 vote
1 answer
74 views

Incorporating GPL patches into commercial version of our software

If we distribute our software both GPL and under a commercial license, do we have the right to incorporate third party patches into the commercial version of our software?
porton's user avatar
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5 votes
2 answers
2k views

GPL and Python import statement

If a Python module X is licensed under GPL and a Python script or module Y imports X, does it make Y necessarily GPL also?
porton's user avatar
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0 votes
1 answer
367 views

Use babylon glossary in an open source (GPL) dictionary app

I want use babylon glossary in an open source (GPL) dictionary app. They don't have any license in them. Can I use them? What about glossaries of commercial dictionaries like oxford, longman, …? Ccan ...
Habib Kazemi's user avatar
6 votes
1 answer
177 views

Will my app be copylefted if it uses the webservice of a GPL server?

I'm planning to code a mobile app that uses an opensource server liscenced in GPL. So my app will make webservices call to that server. Will I be obliged to publish the code of my mobile application?
rsabir's user avatar
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12 votes
4 answers
3k views

If a project is released under GPLv3+ and GPLv4 is less restrictive what happens?

I've seen in multiple places project owners choosing to stick with GPLv2 to prevent the FSF from releasing a license that the project owners don't agree with but I've never seen reasoning beyond the ...
sethmlarson's user avatar
3 votes
1 answer
325 views

Android GPL app that opens a closed source app

Is legal if I edit an open source app with GPL license and make it open source again with GPL license but for doing some tasks it opens another app that is not open source? For example: GPL app ...
Habib Kazemi's user avatar
3 votes
1 answer
188 views

Licensing for research collaboration between EPL and GPL

I work as academic researcher in software engineering. We have an agreement with our university that we can release source code under EPL. Currently, I work on two interrelated research projects (...
Gabor Szarnyas's user avatar
5 votes
2 answers
624 views

Shouldn't LGPL v3.0 provide exception to section 5 (instead of section 3) of GPL v3.0?

Taken from section 1 LGPL v3.0 (https://www.gnu.org/licenses/lgpl-3.0.en.html): You may convey a covered work under sections 3 and 4 of this License without being bound by section 3 of the GNU GPL. ...
Dalibor Frivaldsky's user avatar
4 votes
1 answer
2k views

Software: If I bundle built (compiled) GPL 2 licensed software with commercial software package how does it affect my software license?

If I bundle a piece of compiled software (in this case, FFMPEG) which is licensed under GPL 2, with my own commercial software (which is not licensed under any form of open source license), does it ...
Ben Hayward's user avatar
5 votes
2 answers
203 views

Are the terms of LGPL 3.0 already covered by GPL 3.0 aggregate definition

Are full terms of LGPLv3.0 already covered by GPLv3.0 section 5 under the terms of an "aggregate"? A compilation of a covered work with other separate and independent works, which are not by ...
user avatar
6 votes
1 answer
2k views

Distributing a .NET Core project under GPL

Although the source code of the most .NET Core components is licensed under a MIT License, the binary files of the .NET Core runtime and other supporting libraries on NuGet are released under a more ...
DDoSolitary's user avatar
3 votes
1 answer
2k views

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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4 votes
0 answers
576 views

GPL license and Docker image images [duplicate]

I am confused about how compiled executables are licensed vs the source code that built it. I'm in the situation where I am creating a Docker image of my application. My application itself and the ...
Jono's user avatar
  • 141
1 vote
0 answers
67 views

Distributing a Linux distribution [duplicate]

If I were to take a Linux distribution (e.g. Debian, Ubuntu, etc.) and distribute their provided ISO verbatim, would I be required to provide the respective source code for all GPL software on the ...
William Breathitt Gray's user avatar
5 votes
1 answer
927 views

Can I show a GNU GPL licensed software in a TV movie?

Am I allowed to show the interface of a GNU GPL licensed piece of software being used in a TV movie? I'm not in the US, so "fair use" and similar applications do not apply unfortunately.
7dude's user avatar
  • 53
4 votes
1 answer
507 views

winpthreads license in a GPL project

I have a project that i have licensed under the GPL, and I would like to start working on parallelizing parts of it using OpenMP. To do this on windows using GCC, I apparently have to include the ...
KBriggs's user avatar
  • 227
3 votes
1 answer
145 views

Modifications of server software under GPL, with web/CLI interface

Let's say we have a piece of software which is licensed under the GPL. There are no binaries; it's a framework of groups of services and libraries of Python code running on a server. As far as I can ...
tobiasvl's user avatar
  • 165
-3 votes
1 answer
291 views

Linux Licensing Questions

How do some real time vendors license Linux when it is already open source? I have had a hard time finding licensing models for companies/distributions like Wind River Linux and RedHawk Linux.
user_ABCD's user avatar
  • 105
6 votes
1 answer
235 views

Can an interpreted program be under any license without restricted by its GPL'ed run-time environment?

If I write a run-time environment based on some GPL'ed libraries and separately write an program interpreter which is passively used by the run-time environment, can a program (which is intended to be ...
user avatar
2 votes
1 answer
49 views

Can I sell my primitive material which is intended to be processed in a factory software under GPL?

If I develop a parametric 3D mesh creation tool and license it under GPL (because it is dependent on some geometry libraries also under GPL), can I sell 3D mesh data for use with the tool and would ...
user avatar
2 votes
1 answer
145 views

Licensing a project which uses numerous other modified projects under different licenses

I am using multiple libraries in a project I plan to release and distribute in both source and binary form. In my project, I use a few other open-source projects, and modified the source-code in a few ...
jocopa3's user avatar
  • 123
1 vote
1 answer
1k views

Distributing App for free which uses GPL'ed code

Here is the one of the many (confusing) cases related to GPLv2/3 licensing: My company is developing an application for mobiles which will connect to servers and provide services to users. So, here'...
D4ttatraya's user avatar
2 votes
1 answer
116 views

How open or proprietary are the various PBX systems?

Is the following situation with FreePBX standard for VoIP? Why Not Use FreePBX 13? Glad you asked. Despite the freepbx.org facelift1 and the eternal message that “The ‘Free’ Stands for Freedom,”...
Thufir's user avatar
  • 197
4 votes
2 answers
1k views

Is it appropriate to use open source license with Matlab code?

Since Matlab itself is not open source (commercial software and Matlab language can only be used within the Matlab environment), is it OK to put my Matlab code on github under open source license, e.g....
vicrucann's user avatar
  • 185
2 votes
2 answers
1k views

how did Elastix move from GPL to proprietary?

I'm just scratching the surface for VoIP with Elastix. I notice that Elastix 2.x is "open source" but 5.x is proprietary? Looking into licensing from the manual on Elastix brings: http://www.3cx....
Thufir's user avatar
  • 197
10 votes
1 answer
5k views

Is it legal to Bundle OpenJDK + HotSpot with a closed source application?

As per my understanding, OpenJDK itself is licensed under GNU General Public License, version 2, with the Classpath Exception which should be no issue for bundling with closed source application. ...
Yudhistira Arya's user avatar
8 votes
1 answer
266 views

GPL library in an open source plugin in an open source application using a commercial plugin

I have developed an application, a commercial plugin, and an open source plugin, each part distributed separately. The application dynamically loads each plugin, and function calls are bidirectional. ...
Vortico's user avatar
  • 331
2 votes
1 answer
170 views

Can I edit software under GNU Lesser GPL for my paid app [duplicate]

I'm building a chat bot based on Alice AIML set providing here: https://code.google.com/archive/p/aiml-en-us-foundation-alice/ I'm planning to edit this AIML set and expand it by adding new phrases. ...
huynq9's user avatar
  • 123
5 votes
1 answer
2k views

Using a GPL V3 library in a Android app published on Google Play, do I need to release the application's source code?

I'm in a situation where I'm considering using a GPL V3 library in a module of an Android application. The application will be published to Google Play and will be available for free download. My ...
Mina Wissa's user avatar
11 votes
3 answers
1k views

How is the Expat (MIT) license compatible with the GPL?

Suppose I come across Project G, an open-source project licensed under the GNU GPL, and Project M, an open-source project licensed under the Expat license (also called the MIT license). I want to ...
Tanner Swett's user avatar
  • 1,155
2 votes
2 answers
772 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, ...
Tanner Swett's user avatar
  • 1,155
1 vote
1 answer
418 views

GNU GPL Licensing

We are planning to use an Open Source GNU GPL License software for distribution also with the hardware we sell. We will make several changes to GP, software to make it work with our device and are ok ...
Bhim Rathor's user avatar
5 votes
3 answers
1k views

Software is under GNU/GPLv3, which licence to chose for pictures taken from it?

So, I recently released a FOSS software with a GNU/GPLv3 licence and just realized that the software can be used to produce pictures. I want the pictures to be free (as in freedom) in any case and ...
Kii's user avatar
  • 281
7 votes
2 answers
572 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
  • 71
-4 votes
1 answer
73 views

Common licencing types [closed]

I'm an independent software developer and thus have little to no knowledge about licenses or general software law. Could someone list the most common licenses and what they mean in layman's therms.
LemonCold's user avatar
3 votes
1 answer
2k views

Is it legal to monetize from someone else's software?

I was wondering if I copy someone else's software and make some design changes and try to make money from it. Is it legal? Which licenses provides a facility for that?
Chris Harris's user avatar
3 votes
2 answers
268 views

Can a SaaS product by successfully developed as Open Source?

The accepted answer on How can large open source projects be monetized? mentions open source SaaS. Once you are successful enough in one of the above, you can afford giving away your software for ...
Jonathan Eckman's user avatar
6 votes
1 answer
2k views

Legal issues about embedded Linux

I am trying to modernize a current microcontroller solution with a new one based on embedded Linux (Debian), running on Allwinner A10 chips. I plan to make a Linux app doing all user-interface stuff, ...
user avatar
10 votes
1 answer
1k views

Do Fedora's export restrictions violate the GPL?

On the download page of Fedora, one finds this text: By downloading Fedora software, you acknowledge that you understand all of the following: Fedora software and technical information may be ...
IronGopher's user avatar
9 votes
1 answer
3k views

AGPL v3 licensing: How does external party determine if modifications were made?

When using an AGPL v3 licensed software within a public-facing web application hosted on a private server, you are obligated (section 13) to share your code if you modify the original AGPL code. Many ...
user46688's user avatar
  • 475
22 votes
1 answer
5k views

Are all docker images free (i.e. GPL)?

Looking at the GPLv2 FAQ. I'd like to incorporate GPL-covered software in my proprietary system. Can I do this?. Since, any typical Linux distribution base image contains a variety of GPL-licensed ...
Ariel's user avatar
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