gpl

How does the GPL apply if you are using a tool released under the GPL rather than integrating GPL code?

My favorite text editor is Notepad++, which is released under the GPL. On it's home page it explicitly states that... Running in the MS Windows environment, its use is governed by GPL License. I realize that when you build an application that uses GPL code, you must license your application under the GPL as well. But how does th...

Searching for my source code in a binary-only product

Let say I have a project that I have released under GPL, with the sources available to anyone. Later I find a very similar product, but as closed source, distributed binary-only by someone else. Is there a good way to find out they are using my source code in their product? If the solution is to somehow reverse-engineer the binary, is ...

Intel’s Threading Building Blocks "runtime exception" license: What does it mean?

Just been looking at the threading building blocks, and as their license, they say it's the GPLv2 with the runtime exception. On the Intel page itself they say that the commercial license is the right one if you need commercial support. So what's the deal if I'm doing a commercial, closed source application which uses the TBB, but I don...

Is this legal? (GPL Software / Licensing Issues)

I work for a software / design firm and I recently found out that our "in house" CMS is actually MODx that has been re-skinned by one of our designers. MODx is licensed under the GPL Ver 2.. I would like to know if it is ethical / legal to be selling this to clients. We also offer another package that is actually ZenCart, is this legal...

A GUI wrapper around a GPL CLI application, is it a derivative?

If I develop a GUI wrapper that only executes a GPL cli application (for the sake of argument, say tar) must I release the GUI wrapper as GPL? Is it a derivitive work? If it is a derivative work what must I release? Both the GPL application and the wrapper will be distributed together ...

What are the implications of using GPL django apps in a non-GPL django project?

If I was to integrate a third-party GPLv3,v2 or LGPL django app in my django project, would the licence apply to the complete project or just the third-party application I'm using? ...

Application of [L]GPL to Java/C# code

How the [L]GPL license should be applied to Java and C# code ? I know that when Sun JDK become GPL, they did special exceptions for standard libraries. So, if I cannot open my application source and still want to distribute it ... ... could I use GPL'ed library (by import'ing its classes)? ... could I use LGPL'ed one ... could my app...

GPL Code: What counts as a derivative work?

I'm working on an open-source project that I want to release under a permissive license, because it's a library, not an application and personally, I don't like copyleft for library code. If I were to browse through GPL code written in a different programming language just to get a general idea of how to do something, and then write a d...

What exactly the license of rubyscript2exe ?

It says that rubyscript2exe license is GPL, but I can't understand the following: If I create an executable with it, may I use the application I created in my company without contribute it to the GNU society (without sharing my Ruby code?) Can I even include it in our product and sell my executable as a part of our product? Here is the...

If I use GPL-Licensed bug tracking software, does the actual software I write have to be GPL as well?

I'm looking for good free bug-tracking software. I notice that some (i.e. Mantis) are GPL-licensed. Am I allowed to use Mantis to track bugs for commercial, non-GPL software that we are writing? ...

Is there a better layout language than HTML for printing?

I'm using Python and Qt 4.4 and I have to print some pages. Initially I thought I'd use HTML with CSS to produce those pages. But HTML has some limitations. Now the question is: is there anything that's better than HTML but just (or almost) as easy to use? Additionally, it should be GPL-compatible. Edit: kdgregory & Mark G: The most o...

c/c++ FFT library with non GPL license

I am looking for a FFT library with a license that allow me to include it in a commercial C++ software. Free would be nice. (Intel IPPS is 199$ per head, which is a bit expensive for the number of developper that will be compiling it.) Anybody has good experience with such a FFT library? I found this page, which list a lot of librari...

Does modified Open Source code HAS-TO-BE open-sourced?

We have taken an open-source application, released under GPL ver1.09 and have modified some parts of its source and have made some customisations/enhancements as per our requirement. We are using this application for non-commercial, internal purposes only. Is it mandatory that we have to publish the modified code in open-source, if we ...

What open source license for my web application that uses both GPL & LGPL? advice?

I've written an application I'd like to release as open source, but i'm not sure what to license it under. It's all my own code apart from jQuery which is GPL 2.1 and TinyMCE editor which is LGPL 2.1. I'd like to distribute both libraries with my application if possible. Can I release under GPL2.1 ? All I want to do is license appropri...

Ramifications of using a CSS stylesheet under the GPL?

Does referencing a CSS stylesheet with a GPL (or AGPL) license "infect" the server side of a web application? ...

Using closed source API in a GPL application?

I want to write an application released as GPLv3 (will be written in .NET), and I'm writing it so others can write extensions as DLL libraries. I'm assuming these will also have to be released as GPLv3, and this is as intended. One of the libraries I want the application to ship with on the first release will be a library that interfac...

GPL, javascript and online gaming

I am working on a game interpreter in javascript for sierra adventure games of the 80s. I ported bits of the existing reverse-engineered C interpreter called Sarien, which is GPL licensed. Making my work GPL too. So far so good. However, my aim is creating a website where people can play these games online, with added multiplayer suppor...

Rebranding a GPL'd app as SaaS

Just a quick question since I'm a little iffy on exactly how the GPL works. Say I am developing a hosted software-as-a-service application, and I've found a free GPL app that does 90% of what I was going to write myself. Can I: A) Take the code from the app, rebrand it by changing the name and/or logo and, without modifying a single l...

Are two programs installed by the same Setup package still an aggregate under GPL?

Let's say I have two applications: one is the "server" application and licensed under GPLv3 and the other is the "client" application and is licensed under a non-GPL compatible license. The server runs as a Windows service, and the client is a normal windows application, and they communicate only via TCP/IP and XML (no linking at all). ...

py2exe page says it is licensed under GPL, can I still use it in a python project that is not GPL?

This page says that py2exe is GPL licensed (bottom of the page) My concern is that you have to distribute some of the files they generate. I think this would be allowed with LGPL, but not GPL. <--- Please address this in your answer. My final product would not be GPL and will not give out source code. Update: Please see my answer b...