Questions about the GNU General Public License

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0
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1answer
51 views

Software previously licensed under GPL now APL2, can I use it in a commercial application?

A software I would like to use in a commercial project switched from GPL to APL2. The news cites: Please note that the new code that is currently developed as part of the 2.0 code base is licensed ...
1
vote
2answers
38 views

Sell dual licensed software with 3rd party contributions

I host a project on GitHub. Right now it has a custom license (shareware) but I'm going to move to a dual license AGPLv3 + commercial license. I would like to have some information about the ...
1
vote
2answers
49 views

GPLv3 + commercial license on the same project? [duplicate]

I'm trying to find a solution to publish my source as open source just for personal and no-profit use, and sell licenses for commercial use. I see Packery which uses GPLv3 for non commercial, and a ...
2
votes
1answer
42 views

Releasing libraries used in a commercial application as GPL [duplicate]

While I was at university I developed some PHP libraries which I intended for personal use. I used them in a few personal projects. When I joined my current job we created a commercial product which ...
-1
votes
0answers
40 views

GPL software distribution [duplicate]

I am using a source code(module) which is licensed under GPL with a program that I am planning to sell. I already know that it is legal to "redistribute a GPL licensed software for a fee". But, here ...
3
votes
3answers
3k views

What “sublicense” actually means?

First, it is clear that the right to sublicense doesn't give you the right to relicense. Let's say we have a library with MIT license(1 file), someone adds some features to the library but puts them ...
1
vote
2answers
54 views

GPL and code producing software

I want to make an online management tool for a server software using GPL licensed software. For the tool I'm fine releasing all software to anyone how wants it. After all, it's not rocket science. ...
0
votes
1answer
115 views

Using GPL’d software in a proprietary web application

We are developing website that we charge money from members to join it as membership annual cost, so, we decided to put a plan for the second stage so we are choosing now the load balancer that we ...
1
vote
1answer
187 views

Including GPLv2 code in GPLv3 code

I would like to use some code that was released under GPLv2 in my project. I released my project with the GPLv3 license. Can I do this, or do I have to downgrade to GPLv2?
2
votes
3answers
92 views

GPL covers the linguistic data in *spell dictionaries?

There are good annotated vocabulary in {a,i,my}spell dictionaries, giving the lexical class et all. I'm writing a program that needs a large vocabulary, but with a reduced scope, so I don't need all ...
3
votes
1answer
121 views

Is it OK to use the MIT license for a project that uses Qt?

I built a Qt application. Am I allowed to LICENSE it under the MIT license? Qt is a cross-platform application and UI framework for developers using C++ or QML, a CSS & JavaScript like ...
-2
votes
2answers
27 views

Licensing subcomponents

Say I produce system X, which contains some components (A, B and C, say) which are specific to X, but ripe for generalisation. Let's say X is licensed with a viral open source license ([AL]?GPL). If ...
6
votes
3answers
643 views

Does using GCC specific builtins qualify as incorporation within a project?

I understand that linking to a program licensed under the GPL requires that you release the source of your program under the GPL as well, while the LGPL does not require this. The terminology of the ...
2
votes
3answers
74 views

How do I deal with imported modules in GPL?

I wish to release a non-commercial python application under GPL3 in both source and (PyInstaller) executable form. I'm struggling to find a consistent answer to the problem of imported modules. Can I ...
5
votes
2answers
302 views

Does distributing non-GPLd assets with a GPL application violate the license?

This is somewhat related to my other question, but is actually different. I would like to license a Windows Phone application under the GPL. All other Windows Phone Marketplace issues aside (I'll ask ...
3
votes
2answers
213 views

can a closed source commercial software make system(3) calls to GPL applications (not libraries)?

The closed source commercial software (CSCS), will just make system(3) calls to GPL applications. The user machine will run CSCS and it will call these GPL applications, in realtime, in the very same ...
0
votes
2answers
96 views

Porting an algorithm implementation licensed under GNU GPL v3

I'm working on a JavaScript port of a red-black tree implementation in Java from the book Algorithms 4th Edition, by Sedgewick and Wayne. I believe that my JavaScript port qualifies as a derivative ...
9
votes
2answers
752 views

How can a company sell licenses for GPLed software without violating rights of others [duplicate]

There are tons of questions like "Can I use GPLed code X in my commercial project?" but I found nothing which answers my question. I take ExtJS as an example, but actually you can any commercial / ...
1
vote
1answer
40 views

The term “aggregate” in GPL3

What does this part of GPL3 mean in simpler or more readable terms? If I decide to enhance a GPL3 Program in which some snippets of the codes I could add are generic (may it be on a separate file or ...
1
vote
2answers
69 views

GPL license for software and online service comparison

I have two questions that are linked : 1) Can someone sell a fork of an open-source software under GPL without distributing the source? Example: Can I modify a little bit GIMP, repackage it under ...
38
votes
14answers
3k views

What do I need to do to NOT steal “Hello World” code with a GPL license?

In the project, I found a file, math.c, with a big GPL header and ... //------------------------------------------------------------------------------ /// Returns the minimum value between two ...
1
vote
1answer
61 views

Open-source licenses and modifications

I see in the GPL license FAQ : Does the GPL require that source code of modified versions be posted to the public? (#GPLRequireSourcePostedPublic) The GPL does not require you to release ...
3
votes
2answers
378 views

Dalvik + Java licensing question

This is a licensing question about the Dalvik and J2SE core libraries. In particular the license governing java.util.concurrent.SynchronousQueue. The license header of the class in the JDK source ...
5
votes
4answers
953 views

Does one line of GPLed code make program a “derived work”?

I've recently run into some argument with a person that claims to be a lawyer (I have my suspicions about this not being completely true, though). As far as I know, copying even one line of code from ...
-2
votes
1answer
110 views

What rights do I have if a closed source non-distributed in-home application was stolen? [closed]

I was always wondering about this, because I have been recently reading about many leaks and stolen programs on certain news sites: If a program (running on a server for example, serving http ...
57
votes
2answers
46k views

Can I use GPL software in a commercial application

I have 3 questions about the GPL here: If I use GPL software in my application, but don't modify or distribute it, do I have to release my application under the GPL? What if I modify some software ...
0
votes
3answers
113 views

GPL Copyright notice in fork of dual licenced software when copyright of original has been sold subsequently

Since 2009 we are developing a fork of a CMS that was started in 1999 as commercial project, but released 2009 additionally under GPL. The original programmer sold copyright, code, name and website in ...
0
votes
1answer
48 views

ClamAV Database Usage Policy? [closed]

What about if I sell computers with embedded home-made antivirus using ClamAV database as its main database or as optional database? Of course the software isn't open-source/GPL. Is it allowed? Many ...
-2
votes
2answers
90 views

Do I have to distribute my code if I use GPL based jquery controls in my commercial application

I have been thinking about using 3rd party GPL based jQuery controls in our in-house ASP.NET project. As far as the 3rd party license is concerned, I think I can use any jQuery controls in my ...
0
votes
1answer
44 views

The usage of server under GNU GPL

I have found an open sourced server that is licensed under GNU GPL. We would like to use that server at our client's hardware as a part of our solution for him (we provide our own software but we need ...
2
votes
1answer
60 views

Do I need to include a copy of the GPL / LGPL to every copy of my program?

Is it necessary to include the GPL / LGPL license text to every distributed copy of my program? Or can I just put a link in the About-dialog?
1
vote
0answers
65 views

Is conversion from C/C++ to Verilog/VHDL for FPGA a derivative work? [duplicate]

Say I have a C/C++ software licensed under GPL that gets converted into hardware design. By this conversion I mean that the exact functionality of the original software is being programmed into an ...
2
votes
2answers
169 views

Can software with a restrictive open source license (GPL,AGPL) be used as part of a tool chain in a commercial software package? [duplicate]

If we use a nice library like TetGen, generate a simple application-wrapper that simplifies our needs and publish it as open source, can we use it inside some Pipe/Chain of applications used in our ...
4
votes
4answers
272 views

Do I have to make source code open, if I use GPLv2 licensed software to derive data

I'm working on a calendar project, on my own. In this project I've to use Swiss Ephemeris. It is licensed under GPLv2 and commercial. With commercial version of license, developers entitled to ...
90
votes
6answers
5k views

Ship of Theseus applied to GPL - Can I relicense my program if I replace all of the derivative parts?

I translated a GPLv2 C program to Python, but found it was hard to extend as designed and rewrote significant portions of it. The program is now structurally completely different, but there are ...
-3
votes
1answer
56 views

Java Licenses, GPL, GNU Questions

I would like to ask a few questions about software licenses, with regards to a (Java) program I am making. I am very very new to licenses, so please bear with me. 1. If I produce a Java program using ...
2
votes
1answer
99 views

Applications using GPL code and run-time libraries of proprietary IDEs

The GPL is described as a 'highly viral' license (if an application contains code which is licensed under GPL, distribution requires open sourcing of the whole application). Do I understand correctly ...
16
votes
4answers
715 views

Automatic generate code: “derived work”?

For example, I've GPL software. I'm the author of this GPL software. This GPL software has, between its code, Doxygen comments. These Doxygen comments are written to generate a CC-BY-SA html page, in ...
0
votes
2answers
54 views

GPL - No version mentioned [closed]

This software is allowed to use under GPL or you need to obtain Commercial License to use it in non-GPL project. The above is mentioned on an open source project. It does not mention GPLv3 or ...
0
votes
2answers
110 views

Shipping unmodified open source applications with closed source apps

I am creating a closed source application whose task is to launch other open source applications (similar to start menu of windows). So i have included various opensource applications under licences ...
3
votes
2answers
89 views

Do I have to include the license text when I GPL a web page?

I want to GPL some standalone web pages containing my Javascript/D3.js source code. How to use GNU licenses for your own software says that to distribute source code under the GPL, I should "include ...
0
votes
1answer
82 views

Components having GPL and MIT/BSD license but released under MIT license

If a component “A” is under MIT License ,but it contains some GPL files, according to GPL the whole code should be GPL. But the component is released under MIT. Is it possible? If yes/no, on what ...
1
vote
2answers
235 views

Is my understanding of the license for JQuery.xmleditor correct?

Please correct me if I'm wrong, but I recently found myself in a pretty confusing situation and now I am unsure how to continue. I found the jQuery.xmleditor plugin from the UNC libraries and thought ...
-2
votes
1answer
106 views

Who is the copyright owner of a contribution (commit) to a GPL-licensed project? [duplicate]

Suppose, that Alice started a GPL-licensed project. Later, Bob married Alice, joined the project and made a 50% contribution to it. Then they broke up, Alice sued Bob and by court decision took his ...
1
vote
1answer
60 views

Using a zLib like icensed library which has dependencies on LGPL or GPL libs; what license am I able to release my project under?

If I use an Open Source library which is released under a zLib like license, but it has dependencies on libraries that are using LGPL or GPL; what license am I able to release my project under? If I ...
1
vote
2answers
138 views

Does distributing GPLd assets with a non-GPL application violate the license?

I'm trying to figure out if I can distribute the Faenza icons, which are GPL licensed, with some MIT-licensed software I'm working on. What does the GPL license really mean when applied to a ...
0
votes
1answer
109 views

How does the GNU General Public License (GPL) conform to the Open Source Initiative's (OSI) Open Source Definition (OSD)?

From the OSI's OSD: Free Redistribution The license shall not restrict any party from selling or giving away the software as a component of an aggregate software distribution ...
5
votes
2answers
331 views

GPL- How much source must be released?

Suppose I have a GPL v2-licensed library that is of interest to a closed-source project (e.g. Wolfram Alpha). If some of my code were used in Wolfram Alpha, or a product that interfaces with Wolfram ...
1
vote
2answers
45 views

“Used with permission” reusable in a GPLv2 derivative work?

The LICENSE file of a GPLv2 application I am modifying contains a statement saying that certain resources used in the application were "used with permission" from 3rd parties - such as textual ...
0
votes
1answer
72 views

Does an Rcpp-dependent package require a GPL license?

I'm writing a commercial package that uses R (GPL) for its computation. The GPL FAQ clearly states that GPLed programming language interpreters do not impose licensing restrictions on the "program" ...