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- Choose an open-source license, https://choosealicense.com/appendix/
- Joinup Licensing Assistant – Find and compare software licenses, https://joinup.ec.europa.eu/collection/eupl/solution/joinup-licensing-assistant/jla-find-and-compare-software-licenses
- DejaCode licence finder; it can filter by one or several categories, licence text and a few key characteristics
- All, https://enterprise.dejacode.com/licenses/
- Permissive, https://enterprise.dejacode.com/licenses/?sort=name&category=Permissive
- Weak copyleft, https://enterprise.dejacode.com/licenses/?sort=name&category=Copyleft+Limited
- Strong copyleft, https://enterprise.dejacode.com/licenses/?sort=name&category=Copyleft
- Wikipedia tables and classified lists
- GPL-compatible licences are listed in the 'GPL (v3) compatibility' column of the table at https://en.wikipedia.org/wiki/Comparison_of_free_and_open-source_software_licences#Approvals
- Creative Commons – Can I combine material under different Creative Commons licenses in my work? https://creativecommons.org/faq/#can-i-combine-material-under-different-creative-commons-licenses-in-my-work
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Arrows are transitive and go from licences of the components toward the one of licenceof your project
(From https://www.gnu.org/licenses/quick-guide-gplv3.html)
Above, per the dotted line – , “GPL 2 only” is not compatible with GPL 3”, but ”GPL 2 or later” is. A more detailed view with precisely stated licences:
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In-licences are in columns, out-licences are in rows:
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