Questions about the GNU General Public License

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2
votes
4answers
606 views

Do I need to license my code as GPLv2 if I only read/write to a database and pipe?

I'm writing an API for an open source network monitoring system which is licensed under the GPLv2. I also intend to open source this API but would like to license it under the BSD License. I don't ...
10
votes
8answers
4k views

Can GPL-licensed software be resold?

My research group is developing some software for research purposes. The project leader wants the software to be open source and likes the GPL, but wants to ensure that they software cannot be sold. ...
2
votes
1answer
423 views

Copyleft Licenses - Need to attribute?

I'm currently evaluating which license to use for my next OS project, and things are getting more and more interesting after I decided that I really want to understand what the licenses mean. Up ...
25
votes
3answers
9k views

Can you change code distributed under the MIT license, and re-distribute it under the GPL license?

Is it possible to alter the code of the Chili plugin, which had its latest release on July 2008, and it is licensed under the MIT license, to then license it under GPL? As far I can see, there is no ...
13
votes
11answers
1k views

Difference between free and open software? [duplicate]

Possible Duplicate: Open Source but not Free Software (or vice versa) I recently was at talk were Stallman was the keynote speaker, and he stated he hated the term open software, because it ...
10
votes
2answers
822 views

Best practices for releasing an open source PHP application

I'm a PHP developer for a living but have never worked on or contributed to any open source projects before. I am developing a CMS for my own use. I have a working prototype and I think that once ...
1
vote
3answers
274 views

What's happens if I develop a program taking inspiration from another GNU GPL application?

My friend and I are planning to develop a tiny and simple CMS by taking some inspirations from an already existing GNU GPL CMS. We take the ideas and try to develop it as simply we can, is it ...
4
votes
3answers
2k views

Can software licensed under GNU General Public License v3 be sold by the original author?

As I know, softwares licensed under the GNU GPL is totally free and not allowed for sale. However, today I found this program called Minitube and it is sold even though it is licensed under GPLv3. ...
6
votes
5answers
1k views

Is there a GPL-compatible software license for libraries which allows static linking, but requires redistribution of library source code?

I'm looking for an existing library license which satisfies the following conditions: GPL-compatible Can be statically linked with closed-source programs Binary modifications of the library, ...
5
votes
4answers
796 views

Is running an executable as a child process the same as linking a library?

I'm planning on running an executable as a child process in my program (e.g. using Ruby's popen or C's exec() family of functions). However, the executable I'm planning on running is licensed through ...
3
votes
2answers
593 views

Copyright assignment on open source projects

Some time ago I wrote a BlackBerry application. I find that I now want to release it under an open source license. I am strongly considering the GPL v3 license. All the code is mine; there are no ...
3
votes
2answers
430 views

Is distributing patches in compliance with the GPL?

I'm designing a distro and some of the software packages included are maintained in such a way that my source repository doesn't actually include the source code, but they are included as an ...
3
votes
2answers
702 views

Do donations count as “commercial use”?

Lets say I'm building community that uses some webapp. These webapp uses a a modified version a a GPLv2 licensed theme. Additionally the community uses a donation mechanism to fund itself. Donation ...
15
votes
2answers
3k views

Can I safely use an open source library in an internal closed-source project?

I m thinking of using iTextSharp, which is licensed under Affero GPL, in an internal closed-source WinForms project. No one outside my company will be using it. GPL (and Affero GPL as well) ...
8
votes
3answers
2k views

Do I have to release my code as open source if I use Git?

This is a question focused on the legal aspects of software licensing. I am starting to develop a proeject want the option to claim the source code as properitary and retain full copy rights. I like ...
3
votes
4answers
288 views

Can GPL licensed code be close sourced later by the author? [duplicate]

Suppose someone writes some code, and publishes it as open source under the GPL. Later they decide to close source their application and put it for sale. Is that in violation of the GPL? All code in ...
2
votes
3answers
271 views

Can I brand my open-source application?

Is it possible for the author to register a logo or the name of his/her application when it is open-source because it uses a gpl library (for example)? The application uses the library but it has its ...
10
votes
4answers
2k views

Is any JavaScript code used only for websites, open source?

Rewritten question: I'm not asking a JavaScript-related question, but all "client" languages used on the web (HTML5, JavaScript, CSS, and so on). If I put JavaScript code (that is GPLed) on my ...
5
votes
4answers
732 views

The GPL License Mixing

From the understanding that I am gradually gathering about the GPL it is not possible to mix licenses unless both have a special clause added to allow so. So how are the following possible? Let's use ...
12
votes
9answers
6k views

Can any GPLv2 licensed library be used in a company's internal intranet application?

I am creating an internal application for the company I am contracted to. We wish to use a GPLv2 licensed library in this application. Some points The application is to be used within the confines ...
16
votes
2answers
5k views

Using GPL libraries without modification on a commercial website, do I need to make my source code available? [duplicate]

If I write a public-facing commercial website, and use a GPL javascript library and/or binaries without modifying them (such as plupload), would I be required to make the source for my website ...
2
votes
4answers
736 views

Original author rights in a licensed software project

I'm working on a software project where so far I'm the sole developer. As of right now the code is unlicensed, but the copyright of whatever I've written belongs to me (this is true at least in North ...
0
votes
2answers
159 views

Questions about software licensing [duplicate]

I've been having a discussion about licensing and open source software. Basically - the other guy is saying that licensing is easy, if you're going to build a product you can use an (any) open source ...
3
votes
1answer
880 views

Distributing my Application inside a Debian Virtual Machine Image— How to meet GPL obligations?

I have a Linux application I've developed, and I have created a standalone VMWare Image that people can download to try out the application without needing to install and configure a Linux Server. I ...
12
votes
4answers
2k views

Is it OK to learn an algorithm from an open source project, and then implement it in a closed source project?

Reference The post that started it all In order to clear up the original question I asked in a provocative manner, I have posed this question. If you learn an algorithm from an open source project, ...
15
votes
3answers
3k views

Using a GPLv3 Python module, will my entire project have to be GPLv3 licensed?

I'm working on a small project right now that I plan on releasing under an open-source license (haven't decided which yet). The question I have is that one of the Python modules I use is licensed ...
0
votes
2answers
825 views

OpenCart (GPLv3)

I'm planning to use OpenCart to build a web site. According to the licence (GPLv3) it's necessary to provide the source code of any modifications made. Is it acceptable to provide this on request or ...
2
votes
1answer
195 views

SUN Java and GPL V2 licence issue for linked applications

I have recently noticed that the Sun Java code has been released as GPL V2 code (see Google code repo). Does that mean that all applications written in Java and linked to Sun APIs (beans, and so on) ...
5
votes
1answer
460 views

Can I link GPL and CDDL if I do not distribute?

Perhaps this is an esoteric question, since I will never distribute the code in question and I can fairly easily avoid using GPL code, but I'm curious and it's bugging me--but not enough to consult a ...
2
votes
2answers
107 views

Options for software licensing for plugins?

I'm creating a software application where up until now, the majority of code and assets have been produced by me. There are smaller bits of code that I've taken from other places; these have all been ...
3
votes
2answers
1k views

What license is applicable for an app based on CodeIgniter?

I am trying to fork an application that is based on CodeIgniter. According to the GoogleCode page, the license is GPLv3. However, examining the license.txt file inside the root directory of the ...
2
votes
2answers
273 views

GPL: terms of license

I'd like to use the VLC's DLL in one of my programs. VLC is under the GPL license. Do I have to redistribute all the sources under GPL or can I redistribute only the modified sources of VLC under ...
18
votes
9answers
5k views

Rewriting GPL code to change license

I have found a GPL library (no dual license), which does exactly what I need. Unfortunately, the GPL license on the library is incompatible with the license of a different library I use. I have ...
14
votes
6answers
599 views

How do I spot and document a GPL violation?

How to spot that someone copied open source code licensed with GPL to their closed source commercial application, when you don't have access to their closed source code? Edit: Great answers! Part 2. ...
1
vote
1answer
493 views

using / linking to MS-PL licensed code from (A)GPLv3

I have some trouble understanding MSPL (Microsoft Permissive License) conditions regarding linking to / using a library under MSPL from a project of mine which I want to license on either AGPLv3 or ...
3
votes
2answers
409 views

Is Selling GPL licensed Software Effective?

Let us say that someone writes a piece of software and licenses it under the GPL. Then they go on to sell it. Will this be effective? Won't someone just buy it and redistribute at a lower price? Do ...
2
votes
4answers
3k views

GPL Confusion! Can I sell a product with GPL covered components without making the source available?

I'm really confused.. I'm looking into making a commercial program and there are a few open source, GPL covered components i'd like to use.. Am I allowed to sell my product with the components in ...
5
votes
4answers
2k views

Relicense BSD 2/3-clause code to GPL

Suppose I release some source code under the new BSD license. Is it allowed for someone else to take this code, make modifications to it and distribute it under the terms of the GPL? From Wikipedia: ...
18
votes
5answers
2k views

Do I need to contact a lawyer to report a GPL violation in software distributed on Apple's App Store? [closed]

Some company is selling software through Apple's App Store which uses portions of code that I released publicly under the GPL. The company is violating the licensing terms in two ways, by (1) not ...
3
votes
5answers
809 views

GPL Confusion (I made a mistake)

I have a project that I created under GPL (I am copyright holder). The mistake I made is I deciding to go closed source, in doing that I removed the open source download access and removed the project ...
2
votes
2answers
1k views

GPL copyright notice

I don't have copyright licence from local government. How can I use GPL? As far as I know a step to apply GPL is to add the copyright notice: Copyright XXXX shabab haider... What shall I write in ...
3
votes
5answers
680 views

Is it appropriate to only release the GPL-licensed part of the code as open source?

Is it appropriate to release incomplete open-source firmware, or in other words, to release only GPL software but not proprietary software source code? How are non-open-source programs, in compiled ...
0
votes
2answers
410 views

GPL modify code

If I take GPL code and modify it, does it have to still be under GPL?
11
votes
7answers
9k views

How to get started in opensource projects and programs [duplicate]

I am interested in starting to learn how to contribute to open source projects and Linux in general. I am a first year B.Sc. Computer Science student this year and we use c++ as our main programming ...
7
votes
5answers
7k views

Using C++/Java to develop software and sell it

I know this question has been asked here before, and I also know that this website is for programming questions only, but please do make an exception, as none of the posts I've come across on this ...
2
votes
4answers
662 views

How to make a GPL license with more severe penalties?

I am considering open sourcing some software, but when I read the answers on this questions, it seems like the penalty of ignoring a GPL license is rather small, compared to the costs of the suing ...
6
votes
5answers
1k views

What would happen if a bit of GPL code sneaked into the Windows source code? [closed]

Imagine that an unfaithful (or maybe careless) employee at Microsoft managed to sneak in three lines of GPL code into a the core of a distribution of Windows. Wouldn't this mean that Microsoft would ...
6
votes
4answers
3k views

Can a user relicense LGPL as GPL or GPL as AGPL?

The LGPL (we'll just assume version 3 for all in discussion for ease), is a less restrictive version of the GPL, likewise, the AGPL, is a more restrictive version of the GPL, but is it possible to use ...
4
votes
4answers
401 views

Asset licensing and GPL compatibility

If I want to bundle fonts and images with an application released under the GPL, are there specific requirements for the license of these assets?
4
votes
2answers
921 views

Is it legal to distribute a GPLv3 licensed binary through the apples' app store?

I wrote a small multiplatform app and I am considering publishing the osx version in apple store. I've licensed the app under a GPLv3 license. I sort of like the GPLv3 license but I also like the ...