Open Source Licensing 101
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Jim Jagielski gave a presentation about open source licenses. He is the co-founder and director of the Apache Software Foundation and has worked on many open source projects. He explained that licenses determine how software can be used, modified, and shared. The main types of open source licenses are permissive, weak copyleft, and strong copyleft licenses. Jagielski emphasized that the license chosen should align with the project's goals and that changing licenses later can be difficult.
Open Source Licensing 101
- 1. Open Source Licenses 101 Jim Jagielski @jimjag May 10-11, 2017 : Austin, TX AKA: How I learned to stop worrying and love Licenses
- 2. About Me ! Apache Software Foundation - Co-founder, Director, Member and Developer ! Director - Outercurve, MARSEC-XL, OSSI, OSI (ex)β¦ ! Developer - Mega FOSS projects ! IANAL ! Sr. Director: Tech Fellows: Capital One This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 3. Whatβs in your PROJECT? This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 4. Governance/Community This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 5. Walled Garden This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 6. BDFL This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag βSupreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony!β
- 7. Meritocracy This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag βOut of chaos comes orderβ
- 8. Licenses This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 9. Why? ! Copyright is the default ! Open Source is everywhere ! The license determines use, re-use and distribution ! Not understanding means risk This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 10. License Goals ! Ensure what parts remain open source ! Maintain control over code and direction ! Provide common implementation for standards ! Build community or commercial marketplace ! For most end-users, this is the sole touch-point This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 11. Free software ! βFreeβ as in βfree speechβ (not as in βfree beerβ, although free beer is good!) ! Software freedom is a moral imperative. ! Free Software Definition: - 4 basic freedoms must be maintained ! Free Software ~== Open Source ! F(L)OSS This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 12. Open Source ! For software to be Open Source, it must be under an OSI approved Open Source License ! Open Source Definition: http://www.opensource.org/docs/osd - 10 criteria ! At last count, over 60 exist ! New Open Source licenses are very hard to get approved ! There are really 3 main types This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 13. Promises This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 14. Letβs pretend This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag ==
- 15. Use This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 16. Modify This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 17. Share This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 18. Licenses This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 19. Give me Credit This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag Permissive: ALv2 MIT BSD
- 20. Give me Fixes This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag Weak Copyleft: EPL LGPL
- 21. Give me Everything This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag Strong Copyleft GPLv2 GPLv3 AGPL GPL GPL GPL GPL GPL GPL GPL GPL GPL GPL GPLGPL GPL GPL GPL
- 22. Take Aways ! A license is a tool. There is no βalways rightβ license ! Take time to decide on the right license type ! Changing licenses can be very difficult ! Avoid βvanityβ licenses ! ALWAYS specify a license! This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
- 23. Thanks! ! Jim Jagielski - @jimjag (follow me!) - http://www.jimjag.com/ - http://slideshare.net/jimjag/ - jimjag@gmail.com This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag