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Questions tagged [closed-source]

For questions about closed-source software and how it relates to open source.

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Is 2.11BSD source code encumbered?

The early '90s brouhaha regarding USL code in 4BSD was eventually sorted out with the release of 4.4BSD-Lite. How did this agreement apply (if at all) to 2BSD source code, and was an unencumbered ...
cjs's user avatar
  • 320
5 votes
2 answers
125 views

Choosing an open source license for my up to now commercial project

I'm about to re-license my desktop application as open source software. For several years now, the application is published and sold under a commercial license. While working on a new version (...
z80crew's user avatar
  • 151
3 votes
1 answer
137 views

Can I open-source an API client for a closed-source product?

I want to open source an HTTP Client for a closed source software product. The vendor of this product distributes the binary packages / executables only in forums / repositories which require proper ...
FabianTe's user avatar
  • 133
3 votes
1 answer
92 views

File format convertor for open source and proprietary file formats

I want to build an application that will enable a user to convert files from any one of three formats, into any of those three formats. In order words, there are three formats: aaa, bbb and ccc My ...
Isometric's user avatar
  • 133
1 vote
0 answers
29 views

Can a GPL binary, that has no source code released, be reverse engineered, and that source be released? [duplicate]

can a GPL binary, that have no source code released, be reverse engineered and that source be released? Some devs get a project in GPL, implement new things, release the binary but do not release the ...
VeganEye's user avatar
  • 131
-2 votes
1 answer
745 views

Can I use Qt for closed source commercial software? [duplicate]

I am developing an application for geological research that I intend to sell for commercial purposes. With it I need a GUI too. I started using tkinter, but it seems to be, at least for me, somehow ...
Ian Kassling's user avatar
2 votes
1 answer
143 views

Do I have to comply with the LGPL when using a BSD-licensed library in a closed-source application, which then uses other LGPL-licensed libraries?

I am going to implement a closed-source, commercial application that uses and links statically the modbus-esp8266 library which is released under a BSD New license. At the same time, you can see in ...
maciekKuba's user avatar
2 votes
2 answers
173 views

How do I make a partially-free open-core product that permits custom plugins?

I have a native application I would like to release under a copyleft license. The application embeds a Lua interpreter and exposes an application-specific interface to Lua code. I would like to ...
hgs3's user avatar
  • 131
2 votes
1 answer
86 views

Commercial aggregate with open container and closed GUI

Is it possible to sell open-source R scripts in Linux containers run with Podman on Windows and control the containers with closed-source graphical user interface (GUI)? The straightforward and openly ...
Imsa's user avatar
  • 31
5 votes
2 answers
512 views

Can I link (and distribute) a closed source library within my (GPL) open source software?

I could not find a good answer to this except here. Maybe it's trivial, or maybe it's just uncommon. I want to develop an open source application, and I am keen to use a GPL license, but I need to ...
dariosalvi's user avatar
1 vote
0 answers
34 views

Can I close source a derivative work of an OSS project I am the copyright holder? [duplicate]

I have a new project that will be open source, but want a fork to override some implementations just for me. (a package inside a Go project) I am the copyright holder of the project (upstream) I have ...
blu's user avatar
  • 111
4 votes
2 answers
226 views

License that says you must share changes if you use the code?

Many licenses seem to say you can do whatever you want but must include the source with the binary (or credit if you're using MIT) There's two cases that come to mind. Firmware/software on hardware. ...
Ned's user avatar
  • 41
10 votes
6 answers
4k views

How can I license open source software with a closed-source component?

Let's say I have three repositories on GitHub that I own. I made repository #1 open source under the MIT license. Repository #2 is mostly user graphical interface stuff, but I made it private without ...
BladePoint's user avatar
3 votes
1 answer
70 views

Features in an Open Source Project that can only be tested against proprietary data

I'm currently involved in a project to produce a tool for carrying out certain types of standardised performance assesments on a specific type of industrial plant, that will soon be going open source. ...
user11369247's user avatar
2 votes
1 answer
500 views

Does the Common Public License (CPL-1.0) require dynamic linking to keep source code undisclosed?

I'm looking into the rules of the Common Public License and am wondering how far it's copyleft-ness extends. AFAIK: With LGPL you can keep the library you wish to use in a separate .dll or .so, ...
FrostKiwi's user avatar
  • 123
4 votes
1 answer
571 views

Can a program that uses a GPL library be closed source if it is distributed without the GPL library?

Suppose I create software that uses a library licensed under the GPL. If I distribute the software including the library, the software would have to be licensed under the GPL as well. But what if I ...
Flux's user avatar
  • 733
3 votes
1 answer
802 views

MIT license modify package and names

I have downloaded code that is under the MIT license, and will modify parts of the code, as well as rename classes, namespaces and files, and I plan to relicense the code under one or all of the ...
stacktiago's user avatar
-1 votes
1 answer
5k views

Can i copy MIT licensed code and then publish it as my own?

i have a question. Can i copy code (500 lines) from an open source python pip library under MIT license, modify the code and add my (100 lines) and then publish it as not open source and charge people ...
dismaaay's user avatar
8 votes
2 answers
1k views

Open source licenses and royalties

Many projects, e.g. GitLab, BitWarden, EasyRedmine, use open source software licenses. Their code is publicly available, and the services can be self-hosted. Of course they can charge users for ...
radix's user avatar
  • 247
8 votes
3 answers
2k views

Maintaining open- and closed-source versions of same code

As an individual freelancer, I'm writing some code for my customer's commercial closed-source project. The customer don't mind me to open-source this code, but they would like the code to be available ...
gavv's user avatar
  • 436
5 votes
0 answers
233 views

System libraries and exceptions regarding closed source distribution

There are some specific usage examples I would like to learn, regarding of using some open source libraries inside a commercial closed source product(binary, executable). Most of the answers online ...
Max Paython's user avatar
5 votes
3 answers
184 views

Can I use an unmerged pull request to an Apache 2.0 project in my proprietary fork?

There's a project under Apache 2.0 which has an abondoned pull request. I plan to use this code, fix it and merge into my proprietary fork of the main project. This fork is a part of a bigger ...
Logarithmus's user avatar
5 votes
1 answer
832 views

If I use a mobile app that fetches data from a website under GPLv2+ is the app also under GPL?

I am currently programming a mobile app that is not under the GPL. However, the mobile app correspond with a website that is under GPL Version 2 or higher. In my case the mobiel app send request via ...
Vincent Musk's user avatar
1 vote
1 answer
236 views

MIT License for a translation

There's a software called vnpy on github that's in chinese. We have a translated copy to english. The goal is to keep their MIT license but just for that code. We're wondering: Should we make a ...
v1z3's user avatar
  • 13
0 votes
1 answer
865 views

Are the terms proprietary software and closed source software synonymous?

I think that when a software is proprietary, then its source code is "legally defended" and hence not released to the general public in any way. Are the terms proprietary software and closed ...
lahmedi's user avatar
  • 19
0 votes
2 answers
1k views

How to include licenses of dependencies in commercial closed-source proprietary software?

Our company is developing an enterprise application that is essentially a set of different applications (microservices). Some of these microservices are based on node.js while others are based on ...
Ajay Raghav's user avatar
4 votes
2 answers
247 views

How to protect communities from devolving into "open source in name only"?

There are many open source communities that provide good and effective tools and ecosystems for their users. In fact, there is not doubt that the best programming tools available in this age, follow a ...
user000001's user avatar
1 vote
0 answers
820 views

Can the official MySQL connectors be used in a commercial closed-source backend?

The official Oracle MySQL connectors seem to correspond with these GitHub repositories: mysql-connector-cpp mysql-connector-nodejs mysql-connector-python ... They all contain a LICENSE.txt that ...
bluenote10's user avatar
4 votes
2 answers
2k views

How do you sell a hardware product that uses the linux kernel?

I would like to create a Linux based OS for a VR headset that I'm developing. From what I understand, the Linux kernel uses the GPL-2 license which allows for commercial use but it also requires you ...
at0micV3n0m's user avatar
1 vote
1 answer
57 views

GPL in Plugin for a open source application

I am trying to do a feasibility study for doing a plugin that implements a 2D geometry solver in various programs. The solver is GPL v3. Some of the programs are GPL themselves but some are not, like ...
joojaa's user avatar
  • 113
1 vote
1 answer
57 views

License compliance for a closed source client calling open source server interface to open source library

We have a large proprietary application, a portion of which is a collection of microservers written in Go. We're considering the following: Write a Go microserver, with a GPL license, on top of a ...
Scott Deerwester's user avatar
2 votes
1 answer
323 views

Releasing code containing MIT library using all right reserved license?

For example, I have code int main() { myFunction(); MitCopyPastedFunction(); } where I have copied a section of code from a MIT licensed library. In this case, i want to release my project ...
gstcsr's user avatar
  • 21
2 votes
0 answers
28 views

Crediting a library [duplicate]

I'm using a library for a commercial application, and I'm wondering how I credit that library. The library is using the BSD-3-Clause license, and my application is going to be closed source. Do I ...
user avatar
3 votes
2 answers
769 views

Using reverse-engineered closed protocol in open source software

The question is a partial derivative of this one: Someone open-sourced an un-open-source project Here is the situation: There is a device and a proprietary software to manage that device. They are ...
mspnr's user avatar
  • 131
1 vote
1 answer
117 views

Do I have the right to the bundle that generate by / dependent on open-source libraries?

I created a project with the following structure: The question is: Do I have the right to the BUNDLE where I do not want clients to resell the BUNDLE they have bought? Is it sufficient to include ...
Enji Kusnadi's user avatar
5 votes
1 answer
227 views

Does learning boilerplate code from a project with a restrictive license make my own work derivative?

I have an application I want to put my own license on. In order to get my application started, I wrestled with boilerplate code issues I was not able to find answers for online. When I tried launching ...
user2108's user avatar
3 votes
1 answer
646 views

Could the GPL "infect" my Code if the libraries I used violated the GPL?

Let's assume I use in my closed source a library A which is by the Author claimed as a non GPL license (e.g. MIT, LGPL or even a paid license). Now somebody finds out, that one of the used library in ...
cagcoach's user avatar
  • 151
5 votes
1 answer
1k views

Is Google's Chrome web browser truly open source?

I have been trying to understand if Google's Chrome web browser is truly open source. Some people claim that it is, while others claim that it integrates binary blobs for which the source is ...
End Antisemitic Hate's user avatar
52 votes
4 answers
18k views

Someone open-sourced an un-open-source project

Someone (Person_A) is sharing an open source project (Project_A) on GitHub. The Project_A is a decompiled version of another project (Project_B). But the original Project_B is not open source, and ...
Ryan's user avatar
  • 659
3 votes
1 answer
87 views

Which licence do I choose, publishing a previously closed-source product?

From 2001 thru 2019, a company "A" that I own and I am the CEO of with HQ in EU, had a commercial software product for sale on the international market. We issued perpetual per-site licences to what ...
Cee McSharpface's user avatar
6 votes
1 answer
1k views

What license to use for GitHub repository containing trademark/copyright protected images?

I just can't seem to find an answer to this. Normally I assign MIT License to all of my GitHub repositories, but so far they have only included code that I have personally written. I think that MIT ...
user avatar
-2 votes
1 answer
119 views

closed source binary in Linux image

I've got question about following situation: if i have closed source binary and device with Linux, i want to sell this device with Linux and closed binary in its filesystem. Is it legal to keep source ...
user3506106's user avatar
31 votes
4 answers
9k views

Can I use my own GPL'ed code in my closed source program?

Let's say that program A was made by me, with me being the sole copyright holder. If I license this program under the GPL-3.0, can I use that program in program B that is closed source?
sportzpikachu's user avatar
2 votes
1 answer
165 views

Usage of closed-source software loaded into GPL software as a plugin

I'm distributing a device (ARMv8 server) which runs GNU GPL licensed software. I've changed this software so that it is able to load any plugin in the form of *.so file. I've open-sourced this feature ...
Kris Kwiatkowski's user avatar
3 votes
2 answers
214 views

Using GLPv3 for open-source library modules that can be extended and linked by closed-source libraries and binaries

I'm developing a pretty big open-source project which will require multiple technology stacks. My hope is that this project will be primarily community-based, which means the community should be able ...
Belfer4's user avatar
  • 133
3 votes
1 answer
316 views

Can I sell closed source plugins that interface with a GPL v2 software which is open sourced? [duplicate]

Basically, I have an idea for some software based on an Open Sourced application. If I was to build an application based off of that, and sell my plugins, would this be a breach of terms? This is the ...
Christopher's user avatar
2 votes
1 answer
700 views

Open source project on a closed source engine (Unity) with GPL covered data

There's a project called Endless Sky It's license for Source code is GPL, The license for Graphics is CC-BY, CC-BY-SA and Public Domain. The license for Data .txt files with content like this is ...
Gensys LTD's user avatar
2 votes
1 answer
224 views

Distributing GPLv2 code and ENTIRELY SEPARATE closed-source software (no interaction between them)

Do I have to GPL all software in a .deb package just because it contains some GPL(v2 in this case) code, even if these things have nothing to do with each other except being distributed in the same ...
user3913963's user avatar
4 votes
1 answer
861 views

Use of GPL licensed driver in commercial project

In a commercial project for our customer, I would like to install a driver on all target machines. The driver is on sourceforge (http://com0com.sourceforge.net/). The website states that: The Null-...
helb's user avatar
  • 143
1 vote
1 answer
172 views

exe using LGPLv3 lib: must I also ship the exe's object files?

If I ship a closed-source .exe that dynamically links to an LGPLv3 library (such as Qt), must I also ship the .obj files from which I built the .exe? This podcast at 34:30-36:00 claims so, and also ...
Camille Goudeseune's user avatar