Questions about the GNU General Public License

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0
votes
1answer
52 views

call a non GPL-Program from a GPL program via fork

I downloaded a GPL program, I want to modify this GPL program in order to make it calling a non gpl program (commercial license) via fork+exec. Concerning the input/output data of the non-gpl ...
2
votes
1answer
30 views

Open Source Licenses like GPL in Multiple Licenses models

How can an open source license be compatible with a multi-licensing scheme? According to a similar question, the author of a library could potentially change its license. But problems arise when the ...
-2
votes
0answers
27 views

Is pchart 2.0 free? [on hold]

I am develloping a website of horse racing pronostics and I just wondering if pchart can possibly be free for my case... Basically, I will offer to my customers to pay for getting my pronostics. ...
0
votes
1answer
44 views

Under what circumstances would I have to release a modified version of source code (GPL) [duplicate]

I am working on a social networking platform using a database wrapper released under GPL. I'm fairly new to using open source software, so I'm not sure what would require me to release my source code. ...
8
votes
3answers
367 views

Licensing on Github

I'm uploading to GitHub for the first time and I am facing all sort of doubts about licensing. I did not know that topic was that uncovered in the net! But even it is complex, my situation is so ...
1
vote
1answer
46 views

Using GPLed headers in LGPLed library

For a specific device there exists a Linux kernel module. This module only initialized the device and provides control mechanisms to user land via ioctls and mmap. To use this the device properly one ...
2
votes
3answers
64 views

GPLv2 code as a separate process in a closed-source iOS app?

I'd like my (currently) closed-source iOS app to use some GPLv2 licensed code. The code I want to use is simply a converter from one file format to another — nothing too complex or proprietary. Given ...
2
votes
1answer
149 views

CentOS/RedHat devtoolset license implications

Can I use the RedHat devtoolset to build non-GPL-ed software? Do I have to mind any caveats? From my understanding, the devtoolset knows the limitations of the standard libraries shipped with older ...
2
votes
5answers
725 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 ...
-1
votes
1answer
66 views

May I relicense my project from GPLv3 to Apache 2.0? [duplicate]

I am about to publish an Android app project I would like to do it using GPLv3 license to avoid it being used in proprietary projects for now. If I change my mind in the future, since I am the ...
-4
votes
0answers
47 views

Do business webpages created in local tools, which are under GNU General Public License, require a paid license? [duplicate]

I downloaded and installed apache, php and mysql locally all in a package from https://www.mamp.info/en/downloads/. The installation guides tells me that these applications are under the GNU General ...
1
vote
3answers
86 views

Can we use a GPL 2 product for the commercial purpose?

Note: There are many questions answers related to the licensing. But I think my requirement is specific, so asking a separate question. We are considering to fork a GPL 2 project and use it for ...
2
votes
2answers
128 views

Distributing GPL-ed software with lost source code

Thought experiment. Tom is a software developer. He releases his relatively simple software under GPL. Jerry forks his source code and creates a world savior software with months or years of hard ...
0
votes
3answers
73 views

Re-releasing LGPL code as AGPL : need advice on how to phrase license

I have written a compression codec that I am releasing under the AGPL. I would like to link it with FFmpeg, a video streaming application. FFmpeg is licensed under the LGPL, but since it supports ...
1
vote
2answers
1k views

How does trilicense (mpl,gpl,lgpl) work when you want to use it on public website

I have tried to search for this answer for quite some time and I have gone through all the various FAQ's and documentation regarding the three licenses; but none of them have been able to answer a ...
6
votes
3answers
658 views

GPL Notice on Snippets

Is it ok to put a GPL notice inside a small script or a snippet? This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as ...
1
vote
0answers
94 views

Is there any proof a permissive licenced (MIT/BSD) project will suffer from closed forks? [closed]

Hi is there any stats that a MIT/BSD licence project is hindered (as far as getting people to contribute) from closed forks? Stats or resources but not opinions of which license is best please. ...
1
vote
2answers
72 views

GPL dictionary usage in commercial application

We have an word game commercial mobile application for which we want to use dictionaries for various languages. Most of them have GPLv3 or CC-NC3 licenses. We modify the dictionaries: basically, we ...
5
votes
1answer
65 views

Partial Code Copy from another Open Sourced Library

I need to copy a method from an Apache licensed Javascript library into my GPL licensed javascript library. Can I copy and paste the method into my library in this license context? If so, how am I to ...
1
vote
3answers
785 views

GPLv3 Software vs. BSD (3-Clause) OpenSource Project .. i don't get it

Preamble: If I say "BSD" I mean the 3-Clause BSD license If I say "GPL" I mean the GPLv3 license I am NOT the author of the GPL project I am the author of the BSD project Simple Task: I want to ...
0
votes
2answers
98 views

What happens when a software that is open source without any license is later licensed with gpl version 3?

I want to use certain piece of software for my commercial project. The software that will be making use of is open source and I will modify the source code to suit my needs. Say at a later date, the ...
1
vote
1answer
85 views

Piwik License question

I need to create a specialized analytics app based on Piwik, it will be a commercial SaaS service for small businesses. It uses the piwik javascript tracker, API and the DB to store events, custom ...
1
vote
2answers
879 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 ...
0
votes
1answer
168 views

Software piracy and GPL [duplicate]

Consider the case below: A Wordpress plugin must be GPL since Wordpress itself is GPL There are some plugin authors selling premium WordPress plugins, and assume the authors are okay with the GPL ...
1
vote
2answers
108 views

Using output of GNU GPL software in commercial purposes [duplicate]

I'm not talking about distributing any GPL software. I'm talking about using the output of a GNU GPL software in commercial purposes. For example: I use kdenlive for my video editing and inserting ...
3
votes
3answers
84 views

GPL-3.0 based code in proprietary web application

I am creating a website in php for one of my client. i wanted to use few piece of code from a Open source code based on GPL-3.0 license. e.g i wanted to use validation code from that lib and modify ...
0
votes
2answers
50 views

GPLv3 licensed library requirement and licensing own library BSD [closed]

I have been searching the web for quite some time now, but the plethora of opinions/comments/articles about licensing questions make it difficult to verify how trustworthy the various sources are. ...
2
votes
2answers
55 views

Creator acknowledgement for a modified project (under GNU GPL)

I have been modifying an existing software (which was under the GPL licence). At my workplace, they needed to use the software, but needed some modifications (like new features, different structure, ...
2
votes
2answers
89 views

GPL source code access in subscription model?

Purely out of curiosity, I was posed the question with a hypothetical game corp. that has an online game that they require players to pay a monthly fee for. The specifics was that their service ...
0
votes
2answers
41 views

Does the GNU General Public License (GPL) allow release under a different version of the GPL?

I'm currently modifying code released under GPL v2.0, and I'm wondering if the GPL allows release under a different version, say, GPL v3.0 or if it has to remain under the same version as the ...
0
votes
1answer
80 views

Relicensing GPL to more permissive license [closed]

I have been developing a GPL GUI application for many years by myself in my free time. I have been approached by a company who want to use my code as part of a propitiatory product. This would require ...
1
vote
1answer
75 views

using source code for individual organization vs sharing source code outside organization

If an organization develops their own software internally (with no license agreement) but uses other software frameworks that are open source that we modified to those frameworks work for us ...
0
votes
1answer
58 views

When do I have to distribute the source code of GPLv2 licensed software?

I was wondering if there is a time line when I have to distribute source code for a binary that has been released under the GPLv2 license. To my understanding, I would need to release the source code ...
1
vote
2answers
200 views

I released my project under GPL. Can I still use it in my commercial app?

So I have this super sweet library I'm working on. Let's say I release it into the wild under GPL. In tandem I'm working on a commercial piece of software, and I'd like to use this library in it. ...
3
votes
5answers
812 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 ...
1
vote
4answers
197 views

Charging a fee for GPL software

If I extend software under the GPL licence, I understand that my source code must be freely available. If my source code is freely available can I legally charge a fee for using the version that I ...
7
votes
2answers
342 views

Using an LGPL licensed library that may or may not include GPL licensed code from an MIT licensed library

I have read this question on SO, but it doesn't appear to answer my question fully. I maintian a library which is licensed under the MIT License. In my MIT licensed library, I dynamically link ...
1
vote
2answers
127 views

Can I make a closed-source implementation from scratch of a GPL-licensed library? [closed]

I've found a paper describing a particular algorithm I'd like to use, and published with the paper is a GPL licensed source code for the algorithm. I am wondering if I can re-implement the algorithm ...
-1
votes
1answer
49 views

How to license (PowerShell) GUI Projects [duplicate]

After almost 2 years learning how to code (in Powershell) and some help at Stackoverflow from time to time, I'm now finally on my way to release my first GUI project. I intend to release the compiled ...
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, ...
10
votes
1answer
2k views

Is requiring attribution GPL-compatible?

Can code licensed under a clause like this: Redistribution of this work, with or without modification, is permitted if Bob Joe is attributed as the original author or licensor of this work, but not ...
3
votes
1answer
615 views

How and when had the CC BY license become GNU GPL-compatible?

I believed that Creative Commons Attribution License, even being non-copyleft one, was always and still is incompatible with GNU GPL because of multiple minor issues; which, however, were gradually ...
1
vote
0answers
27 views

Integrate non-free (with permission) / differently licenced logos in GPL repository

I'm planning to open source an Android app that I developed against the API of a (small regional) social network. This app is the 'official' version for the website and thus allowed to use the logo ...
2
votes
2answers
60 views

Containing the GPL inside an external service?

Not asking for legal advice, just educated intuition. Lets say a programmer creates a program to provide a service, for instance (hypothetically) face recognition. User logs in, uploads pictures and ...
11
votes
7answers
10k 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 ...
0
votes
0answers
26 views

Distributing binaries with a close source program in MIT,BSD,Apache and GPL [duplicate]

I want to make a program that cant be source (because of using commercial libraries) and it should use some binary of others programs that are licensed in MIT,BSD,Apache and GPL. I get these ...
8
votes
2answers
164 views

Why does the LGPL require combined works to include a copy of the GPL?

I was reading through the LGPL license and found a requirement that I was previously unaware of. Section 4 (Combined Works) states: You may convey a Combined Work [...] if you also do each of the ...
0
votes
1answer
66 views

Incorporating GPL content in a commercial application on iOS

Let me start by saying I do generally understand copyleft GPL, but I'm having some trouble with this particular scenario. It's quite complicated to communicate but I'll try my best. First I'm ...
1
vote
1answer
47 views

A little clarification needed with GNU GPL v3

I'm programmaing a visual novel which has the following parts: Script file Program code used for the events where parts of the scripts are displayed 2 different minigames Images Now one of the ...
0
votes
3answers
166 views

Do I have to use GPL for my linux application? If yes, how not to legally?

I've written a linux application that interfaces with a lot of GPL software. My application is written in javascript/HTML/CSS/python and uses MariaDB on a CentOS 7 platform (it also uses jquery and a ...