this post was submitted on 27 Oct 2023
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Question regarding license choice for my program (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by Zion@lemmy.world to c/linux@lemmy.ml
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Hey fellow Linux enthusiasts.

I'm inching closer to releasing my program for Linux. I'll go into details on what the program is when I release it, as it's not really relevant to this question (IMHO).

Anyway, here are my prerequisites:

  • the program will be free. I will accept donations, but the program will be free to download and use.
  • open source.
  • I'm happy for others to use my code, as long as I'm credited.
  • I do not wish to allow others to use my code in commercial applications (as there will be mobile versions later, and I don't want clones selling it for money, as the mobile versions will also be free.

I'm looking for advice on the best code license to choose, based on my requirements. I'd also like it if my choice of license didn't prohibit my program from potentially being included in package managers.

I'm grateful for any advice. Thank you.

Edit

Thanks for the replies everyone. I've decided to not let my concerns overcome the most important thing of releasing the project as fully open source.

Just going to go with GPLv3 and not worry about the clones that will happen regardless of the license type, if the program becomes popular.

Thank you all for your insight and for helping me come to what I believe to be the best option.

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[–] pavunkissa@sopuli.xyz 16 points 1 year ago (1 children)

As others have already said, the prohibition of using the code in commercial applications would make the license not open source/free software (as defined by the Free Software Foundation and Open Source Initiative.)

These are some of the most commonly used licenses:

  • MIT - a very permissive license. Roughly says "do anything with this as long as you give attribution"
  • BSD - similar to MIT (note that there are multiple versions of the BSD license)
  • ASL2 - another permissive license. Major difference is that it also includes a patent grant clause. (Mini rant: I often hear that GPL3's patent clause is the reason big companies don't like it. Yet, ASL2 has the very same clause and it's Google's favored license.)
  • GPL - the most popular copyleft license (family). Requires derived works to be licensed under the same terms.
  • LGPL - a variant of the GPL that permits dynamic linking to differently licensed works. Mainly useful for libraries.
  • AGPL - a variant of GPL that specifies that making the software available over a network counts as distribution. (Works around the SaaS loophole. Mainly used for server applications.)
  • Mozilla - a hybrid permissive/copyleft license. I don't fully understand how this one works.

If you want to use a true FLOSS license and your goal is to discourage people from selling it, I'd say the GPL is your best bet. Legit vendors who don't want to give out their source code won't touch GPL code. The non-legit ones won't care no matter what license you choose. Also, iOS App Store terms are not compatible with the GPL so they can't release their stuff there, but you can as long as you hold full copyright to your application.

[–] skullgiver@popplesburger.hilciferous.nl 7 points 1 year ago* (last edited 11 months ago) (2 children)

[This comment has been deleted by an automated system]

[–] stifle867@programming.dev 4 points 1 year ago (1 children)

Please don't do this. It's immoral to ride off the free work of others, then turn around and rug pull them. Either stick with open source and take the good and the bad, or go proprietary. Don't do this fake open source that harms the community. If you have a permissive license there's nothing stopping you from selling other's work and a CLA is not needed. If you have a copyleft license then a CLA defeats the entire purpose of that.

[–] skullgiver@popplesburger.hilciferous.nl 2 points 1 year ago* (last edited 11 months ago)

[This comment has been deleted by an automated system]

[–] pavunkissa@sopuli.xyz 2 points 1 year ago

That is a good point to emphasize. A downside of a CLA is that it adds a bit of bureaucracy and may deter some contributors. If the primary concern is whether a GPL licensed app is publishable on an App Store, an alternative is to add an app store exception clause to the license. (The GPL allows optional extra clauses to make the license more permissive.) Though this means that while your code can be incorporated to other GPL licensed applications, you can't take code from other GPL projects that don't have the same exception.