Questions tagged [cc-by-sa]

For questions about the Creative Commons Attribution-ShareAlike (CC BY-SA) licenses.

Filter by
Sorted by
Tagged with
62
votes
2answers
10k views

Why is CC BY-SA discouraged for code?

Everybody knows that you shouldn't use a CC BY-SA license on your code. Even the Creative Commons folk recommend against it. What I don't know or understand is why. I can't seem to find any ...
62
votes
2answers
2k views

Relicensing content under CC-BY-SA

I have compiled a body of work from numerous contributors, who all licensed their individual works to me under CC-BY-SA version 3. Can I now instead redistribute their work under CC-BY-SA version 4?
35
votes
6answers
2k views

Can I copy-paste a snippet from Stack Overflow into my GNU-GPL project?

I have found on Stack Overflow a 10-lines block of code that does exactly what I want. There is no license information in the post nor on the answerer's profile page, so the CC BY-SA 3.0 license of ...
25
votes
2answers
902 views

What do I need to share if I include CC-BY-SA artwork in my software?

CC-BY-SA is a Creative Commons license with a copyleft clause - if you derive something from it, you must also provide the derivative under the same license if you distribute it. The relevant clause ...
20
votes
1answer
578 views

What is considered proper attribution for a deleted Stack Exchange post?

When a creator posts content to any Stack Exchange site, they grant Stack Exchange a Creative Commons Attribute Share-Alike license to use (and display and share) the content. This is irrevocable - ...
18
votes
2answers
1k views

Can I “upgrade” the version of CC BY-SA from 3.0 to 4.0 in my modification?

What I'm doing: I'm adapting a work licensed under CC BY-SA 3.0 Unported license to a different language. I'm indicating the original work and its license. I'm indicating that I have made changes to ...
18
votes
1answer
376 views

Do Stack Exchange’s ToS mean that the user-generated content is double-licensed to them?

In the ToS of Stack Exchange sites, under the section Subscriber Content, the first sentence states that my submitted content is licensed (to Stack Exchange) under CC BY-SA 3.0: You agree that all ...
15
votes
1answer
786 views

How can I license a YouTube commercial which includes CC BY-SA Licensed music?

Context: I'm making a YouTube commercial, which includes some music that's licensed under CC BY-SA 3.0. Would an audio-visual work constitute a derivative work of the music used in it, and (given the ...
15
votes
2answers
202 views

The Stack Exchange licence: Can I post open source code here?

Stack Exchange applies CC-BY-SA to all posts. How does this interact with free or open source licences? If someone wants to ask a question about a piece of open source software can they post code ...
13
votes
2answers
502 views

Does the CC-BY-SA License require that source code of derivative works be shared?

For example, if I create a LaTeX file and license it with CC BY SA, can someone create a derivative work, but only publish the PDF, without giving out the derived LaTeX source code? Does this fall ...
13
votes
1answer
427 views

Selling a book based on CC BY-SA

My company would like to make a book mostly adapted from CC-BY-SA licenced text. I understand this is legal if we distribute the adapted text under the same licence. But what if we add to the book our ...
12
votes
5answers
5k views

Do the CC licenses prevent insults?

Most CC licenses allow a change of the material Adapt — remix, transform, and build upon the material for any purpose, even commercially. I am a big fan of CC licenses, because they enable ...
12
votes
1answer
204 views

How does re-licensing without the approval of authors work (eg, wikimedia case)?

Wikipedia (and any other Wikimedia product) change to a dual licence since 01/08/2009. As I understand, that implies they redistribute GFDL licensed text in CC-BY-SA without asking every author (wich ...
11
votes
2answers
597 views

Can I use GPL v3 for source code and CC BY-SA v3 for comments?

I have some source code for which I am the copyright holder. I want to release it under the GPL, but when it was closed source, I copied a bunch of a stuff from Wikipedia for a couple of classes and ...
11
votes
2answers
305 views

What counts as adaptation for using code licensed under CC BY-SA 4.0 in software licensed under GPLv3?

Since 2015-10-08, GPLv3 is listed as one-way compatible license for CC BY-SA 4.0: […] you may license your contributions to adaptations of BY-SA 4.0 materials under GPLv3, but you may not license ...
10
votes
2answers
1k views

Will adding a BY-SA image to a blog post make the entire post BY-SA?

I tried to read the license deed but it was too advanced for me to understand. Consider these 2 situations, I take a CC-BY-SA image and upload it to my blogpost it as is, without any modification. I ...
10
votes
2answers
750 views

Can I post code examples with GPL software on Stack Overflow?

Suppose there is a Python library called g which is licensed under GPL v2.0 (or v3.0). Suppose further that the library is sufficiently complex that it contains some C/C++ component(s) that are ...
8
votes
1answer
95 views

Attribution for a “2nd generation” derivative work

How do you deal with attribution of a work that is derived from a work that is itself derived from an original work protected under CC BY-SA? And while we're at it, let's push it further: Let's call ...
8
votes
0answers
101 views

CC-BY-SA - Do I have to distribute intermediary formats of my adaption? [duplicate]

There's a website that I really like which is licensed under CC-BY-SA. I've always thought it would work really well as a physical book too, and so I've decided to try to make it happen. I'm planning ...
7
votes
2answers
254 views

How do you write an attribution if there's ambiguity over which version of Creative Commons applies?

Currently there's a discussion on Meta over whether or not StackExchange was allowed to retrospectively change their licensing policy from CC SA 3.0 to CC SA 4.0. Presuming that it is indeed an open ...
7
votes
2answers
196 views

Can I adapt a CC-BY-SA licensed webpage to host rights-reserved copyrighted content?

I think the inverse of What do I need to share if I include CC-BY-SA artwork in my software?. Some webpages, such as Code for America are licensed under CC-BY-SA. If I want to adapt the code for this ...
7
votes
1answer
294 views

Creative Commons license CC BY-SA doesn't work for commercial content?

I'm puzzled by the "share-alike" clause in Creative Commons license. This license allows free commercial use but "require[s] [] adaptations of the work to be released under the same or similar license ...
7
votes
1answer
49 views

In a Wikipedia article am I able to insert information licensed with CC BY even though they use a CC BY-SA license?

Background: While writing an article on Wikipedia I needed to include text that is licensed under a CC-BY license. After a bit of digging I found that Wikipedia uses a CC BY-SA license. Question: ...
7
votes
1answer
87 views

Can I license Latex code under GPL but the content under CC BY-SA?

I have written a non-trivial scientific text for university. It is written in Latex and I want to make the source available under GPL (v3 if that matters) so other can learn from my Latex skills. ...
7
votes
2answers
152 views

Creative Commons ShareAlike, weak or strong copyleft?

I am wondering whether Creative Commons ShareAlike is a weak or strong copyleft license. That is, does it allow linking with code with under a different license?
6
votes
1answer
92 views

In which cases must I relicense my product under the CC BY-SA license?

Because copyright law can encompass a huge range of scenarios and be unclear to talk about in abstract terms, I'm going to give concrete examples. I understand CC BY is a permissive license. All it ...
6
votes
1answer
101 views

Quoting your own content (in your own work, licensed under CC BY-SA 3.0) to avoid licensing it

Bob writes an article and licenses it under CC BY-SA 3.0. Certain laws can permit Bob to include someone else’s content in his article, even if this content isn’t compatibly licensed. For example, ...
5
votes
3answers
136 views

How do I stop republication under a different license?

Suppose I am finishing an open source software. I am about to publish it but I just have to choose the license. I want it to be a CC-BY license but I don't want anyone to republish it under ANY other ...
5
votes
2answers
222 views

What license for code resembles CC BY-SA most?

With the rise of much licensing debate around here on Stack Exchange, there's been a lot of arguments about having a license closest to the status quo. Initially, I would've thought that the closest ...
5
votes
3answers
226 views

Does a CC BY-SA 4.0 specification lose any AGPL3+ benefits?

If I release a program specification [1] under the AGPL, and the program itself under the AGPL, the two are obviously compatible: I can develop them at the same time, copy text (for example, method ...
5
votes
1answer
64 views

What are my obligations when citing myself on an SE site for an internal company blog?

I would like to use content I wrote on SE as part of an internal blog. However, I would like to avoid directly linking my SE profile to my RL person. If I quote material from an SE post written by me,...
5
votes
1answer
180 views

Must CC BY-SA be included for ideas and code taken from Stack Overflow?

I'm still unclear about licensing. If I have a project on Github that's licensed under GPL and found pseudocode on a Stack Overflow question, must I now dual license my code on Github and GPL as ...
5
votes
1answer
102 views

Can CC BY 4.0 content be adapted into a CC BY-SA 3.0 work?

If an original work is licensed under Creative Commons Attribution 4.0 (CC BY 4.0), can an adapted work (i.e. derivative work) be made from it and published under Creative Commons Attribution 3.0 (CC ...
4
votes
2answers
128 views

Protection from 'this version or later' in CC BY-SA

I was wondering about the meaning of this term in CC BY-SA 4.0 (and others), with this context: In addition to the conditions in Section 3(a), if You Share Adapted Material You produce, the ...
4
votes
2answers
64 views

Does Stack Exchange disallow me to use posted contents in an Apache 2.0 licensed project?

Content posted on Stack Exchange sites like Stack Overflow or Electrical Engineering are CC-BY-SA 3.0 licensed. User contributions licensed under cc-by-sa 3.0 See the footer of any SE site: As ...
4
votes
1answer
100 views

What is the exact definition of an Adaptation under Creative Commons?

The text of the CC-BY-SA 3.0 license mentions the following: You may Distribute or Publicly Perform an Adaptation only under the terms of: (i) this License; (ii) a later version of this License ...
4
votes
1answer
91 views

How could I copyleft a document that contains a substantial amount of both code and prose?

I am writing a document in LaTeX that contains large sections of Python code and output. Typically, I like to license my writing under CC BY-SA 4.0 and my code under GPLv3. I have already placed a CC ...
4
votes
1answer
93 views

Is it more accurate to compare CC BY-SA to LGPL rather than GPL?

CC BY-SA, LGPL and GPL are all copyleft licenses. GPL's key feature is that by embedding one work in another (as defined in a software context), the combined work becomes GPL. With LGPL this is not ...
4
votes
1answer
86 views

Can I sell Wiktionary data?

I'm wanting to sell Wiktionary word definitions - not the raw page HTML and content, but extract the word definitions and package them in a couple of formats: Documents (e.g. PDF) Powerpoints App ...
4
votes
1answer
246 views

GFDL and CC BY-SA compatibility and Use

For Free/Opensource documentation, There are two license widely used. GNU Free Documentation License Creative Commons BY-Share Alike Both say re-distribution must be under same license as GFDL is ...
4
votes
1answer
54 views

Using CC-BY-SA images in a CC-BY-NC-SA document

I am creating a presentation that includes some unmodified images licensed under either CC-BY, CC-BY-SA version 2.0, 3.0 or 4.0 (no CC-BY-SA 4.0) and some public domain images. They are all attributed....
4
votes
1answer
60 views

Licensing a segmentation dictionary derived from CC SA-BY source (Wikipedia)

We are creating a Japanese Morphological Analyzer (https://github.com/ku-nlp/jumanpp), but it needs a segmentation dictionary to perform the analysis. We want to license the analyzer under a ...
4
votes
1answer
392 views

Can I publish my C++ game on GitHub under MIT using art and libraries under others licenses?

Can I publish my C++ game on GitHub under MIT using art and libraries under others licenses? I want to publish my code on GitHub, but I have some troubles with licensing. In my game I use GLEW (...
4
votes
1answer
304 views

MIT-licensed project with CC-BY-SA dependency

I have a project (code) that I am wanting to license as MIT. It has a few dependencies, mostly assets (icons and images). Some dependencies are MIT and I include their licenses in the source, but a ...
4
votes
1answer
164 views

Using CC Attribution-Share Alike 3.0 Unported image in a book

I would like to use an image in the cover page of a paid book. The image is first published in Wikimedia and it is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. I ...
4
votes
1answer
34 views

Using modified CC BY-SA 4.0 images in app?

I am building an application and I want to use OpenMoji in it, but with modified colors. Firstly, I wanted to add All emojis designed by OpenMoji – the open-source emoji and icon project. ...
4
votes
2answers
76 views

Wiki template licensing?

I do some editing for Wiki A, which is generally licensed in a typical wiki fashion: Content is available under GNU FDL 1.3 unless otherwise noted. Wiki B uses some templates I'd like to copy for ...
3
votes
1answer
165 views

How can I license my Github Page hosted in a open-source template?

Let's assume the following situation: I have created a personal blog hosted on Github Pages, based in a modified version of a template from HTML5UP, which is available for free for personal and ...
3
votes
1answer
526 views

Can I use source code licensed under CC-BY-SA for commercial closed source project?

I want to use some source code under CC-BY-SA for my company's project. That project is commercial and closed source code. I want our project not to have obligation to release the source code. Is this ...
3
votes
1answer
43 views

Appropriate copyleft license for translation files

I'm using a GPL license (with an AppStore exception) for my app and CC BY-SA for the images used in the app, as I know the GPL isn't appropriate for artwork. However, I'm wondering what I should ...