When comparing Creative Commons vs GPLv3, the Slant community recommends GPLv3 for most people. In the question“What are the best open-source licenses?” GPLv3 is ranked 4th while Creative Commons is ranked 5th. The most important reason people chose GPLv3 is:
Requires people building on your work to licence it for others to use.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to use licensing decision tool helps customizing the license type
The Creative Commons has an easy-to-understand utility for choosing which style of the Creative Commons you want to use.
Pro Can restrict commercialization
A popular optional clause to the creative commons is the "Attribution-NonCommercial" clause, which restricts work to non-commercial use.
Pro Copyleft
Requires people building on your work to licence it for others to use.
Pro Ensures that the software does not become proprietary
Cons
Con Can restrict commercialization
Con Not recommended for software
Creative Commons does not recommend using CC licenses for software.
Con Limits the developer's ability to package or use other libraries/software
Con Copyright
Requires people building on your work to license it the same way you did. Good if you want to pull their code into your project, but issues for potential end users can arise.