16 votes

Can I use new BSD licensed library/code in commercial closed source project?

Yes. You can use BSD-licensed projects in closed-source, commercial projects. You must include the original copyright and license. From WikiPedia's BSD License page: The BSD License allows ...
8 votes
Accepted

Do I have to distribute my commercial source code that links GPL software if I only use this commercial software to provide a reporting service?

For the regular GPL, the answer is no. Quoth the FSF FAQ: Q: Is there some way that I can GPL the output people get from use of my program? For example, if my program is used to develop hardware ...
  • 27.3k
7 votes

How to sell an application? Licensing problems

TL;DR Use an app store. They do all the hard stuff for you. All you'll need is a simple website to point to your app in the store. You have many questions here, and may issues to resolve... Do I ...
  • 880
7 votes

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

This situation is covered in the GNU GPL FAQ, in the section "I'd like to incorporate GPL-covered software in my proprietary system. Can I do this?" in many cases you can distribute the GPL-...
  • 22.9k
6 votes

Is using data generated using AGPL-v3 licensed code considered distribution?

In this case, the difficult legal test is deciding whether your data-consuming application can legally be considered "combined with" your AGPL data-producing application. The FSF proposes ...
  • 5,063
5 votes
Accepted

How to sell an application? Licensing problems

It has probably never been easier to sell this kind of software, due to the emergence of online app stores for Mobile phones and now Windows. If you compile your app as a windows store app, sign up ...
  • 66.4k
5 votes

What prevents others from commerciallly redistributing open source software as-is?

For example, if I wrote an open source Android game under the MIT license and some studio decides to put the game on the Play Store, without modification or my permission, and manage to sell thousands ...
  • 22.9k
5 votes

what kind of certificate needed for my application ?

I think Code Signing Certificate is an ideal option to protect your application. Code Signing Certificates help create a sense of online confidence when users download your software by verifying the ...
5 votes

Releasing libraries used in a commercial application as GPL

The license is intended to protect your copyright and interests, not to take them away. As the only author of the library, you are free to relicense it under whichever scheme you wish, including for ...
4 votes
Accepted

Dual licensed (LGPL, commercial) library and contributions

IANAL, but as far as I understand you should ask the contributer to assign the copyrights of the changes to you, refusing to merge if they doesn't. Once the copyrights are you, you can distribute in ...
  • 11.9k
4 votes
Accepted

Including GPL software in closed-code project

If you are merely distributing the executable output of the Fortran compiler, and not the compiler itself, then you're not distributing the compiler, and therefore not triggering the GPL's copyleft ...
4 votes

How to sell an application? Licensing problems

In 2015 there is no need in making such system by yourselves. Every major platform has its own application market. Desktop: On Windows: Microsoft Store On OS X: Mac App Store On Ubuntu: Ubuntu ...
3 votes
Accepted

Commercial use of content licensed under "Creative Commons License Attribution-NoDerivs 3.0"?

Yes, you can use content released under the Creative Commons Attribution-NoDerivs 3.0 Unported license in a commercial application. According to the legal code and the human-readable summary, ...
  • 77.6k
3 votes

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

I emailed the FSF licensing lab, and here is the response I received (NB: it was from a licensing volunteer, not from a lawyer, and does not constitute legal advice): Your obligations under sections ...
  • 5,063
3 votes
Accepted

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

This is venturing close to a request for legal advice, which we can't give. If you want to be really sure what is legally correct, consult a real lawyer. The way that copyright statements are ...
3 votes

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

And, I am NOT going to distribute any GPL application (neither its sources) packaged together with CSCS. Copyright controls who is allowed to distribute something, not who is allowed to use it. If ...
  • 10.3k
3 votes

Is using data generated using AGPL-v3 licensed code considered distribution?

For copyright, a program and the data that the program operates on (or the data that come out of the program) are considered to be completely separate works and the copyright license of the one does ...
3 votes
Accepted

License opensource app for non-commercial

I would recommend you to use a copyleft license like the GPL. While the GPL does not forbid to sell the software, it requires to license it under GPL when sold, so when someone polishes your ...
  • 22.9k
2 votes
Accepted

Can I include mongod.exe in my commercial destop based or user self hosted app withou open sourcing it?

Read the web page. It says: The goal of the server license is to require that enhancements to MongoDB be released to the community. Traditional GPL often does not achieve this anymore as a ...
2 votes
Accepted

Using MonoDevelop for Commercial Software Developing

MonoDevlop is licensed by a mixture of LGPLv2 and X11/MIT code, therefore you can use it to develop any kind of software you want. Your examples of MonoDevlop and Qt target two completely different ...
  • 27.3k
2 votes
Accepted

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

Yes, GPLv2 code can be used in the manner you describe. That in fact is one of the motivations for the AGPL and GPLv3. The modified code must, of course, never be given to anyone outside the ...
1 vote

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

Since you are not distributing the software to anyone outside your organization, there is no requirement to make the source code for your changes available. The applies for GPLv1, GPLv2 and GPLv3. ...
  • 25.1k
1 vote

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

Read the GPL 2 license carefully, and be prepared to share the code along with all your changes with others. If you hand over the software to anybody outside your company without giving them the ...
  • 39.1k
1 vote

How to sell an application? Licensing problems

There will be many answers along the lines of "use someone's AppStore that handles all the nasty credit cards and taxation issues". This will elide over the "and sign about sixty pages of rapidly ...
1 vote

Using JDK in Google Android Studio License Issues

The existing answers here aren't entirely true. The Oracle Java SE license agreement contains the following term: The use of Software in systems and solutions that provide dedicated functionality (...
  • 17.4k
1 vote

Using JDK in Google Android Studio License Issues

No, Oracle's JDK is free of use. Android is based on Java Programming language. That's why you need to install Java, so that your app can be compiled and run successfully.
1 vote

Using MonoDevelop for Commercial Software Developing

The license of the IDE that was used to develop software generally does not have any impact on the licensing of the software that you wrote. The IDE is a tool, not a library. The IDE does not get ...
  • 2,091
1 vote

Is using data generated using AGPL-v3 licensed code considered distribution?

The AGPL is the Affero General Public License, and offers some protection for users from proprietary lock-in when they use a web service powered by free code. There are a couple of recent versions ...
  • 576
1 vote

Is it okay to use a short EULA?

No. It is not okay to use a short EULA. The justice system is adversarial and your adversary is human. If you can make your adversary weary, confused, and doubtful then you must. You are not writing ...
  • 119
1 vote

What are arguments for Commercial Off the shelf (COTS) products?

Based on experience, especially with a platform such as ERP, that companies use to run their business, it is quick for Management to go for the COTS ERP platform rather than actually look at what is ...

Only top scored, non community-wiki answers of a minimum length are eligible