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Overall information and licence lists
- GÉANT Open Source Licensing and Compliance workshop slides, https://e-academy.geant.org/moodle/mod/resource/view.php?id=2869
- OSS intro, https://www.gnu.org/philosophy/free-sw.en.html
- Guide to open source licenses, https://www.synopsys.com/blogs/software-security/open-source-licenses/
- Top open source licenses and legal risk for developers, https://www.synopsys.com/blogs/software-security/top-open-source-licenses/
- Standardised SPDX licence codes and licence texts, https://spdx.org/licenses/
- University of Pittsburgh Library System – Copyright and Intellectual Property Toolkit, https://pitt.libguides.com/copyright
- WhiteSource – Open Source Licenses Explained, https://www.whitesourcesoftware.com/resources/blog/open-source-licenses-explained/
- Free Software Foundation's free software licences and Non-free Software Licenses – classified individual licences and their compatibility with GPL, https://www.gnu.org/licenses/license-list.html
- Open Source Initiative (OSI) approved licenses
- By category, https://opensource.org/licenses/category
- Alphabetical https://opensource.org/licenses/alphabetical
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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 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 licenses are listed in the 'GPL (v3) compatibility' column of the table in https://en.wikipedia.org/wiki/Comparison_of_free_and_open-source_software_licences#Approvals
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(From David A. Wheeler 2007, https://web.archive.org/web/20210101030518/https://dwheeler.com/essays/floss-license-slide.html, SVG variant: https://en.wikipedia.org/wiki/License_compatibility#/media/File:Floss-license-slide-image.svg)
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Joinup Licensing Assistant, https://joinup.ec.europa.eu/collection/eupl/solution/joinup-licensing-assistant/jla-compatibility-checker
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