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.

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)…
! 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. What’s 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
“Supreme executive power derives from a mandate from the masses,
not from some farcical aquatic ceremony!”

7. Meritocracy
This work is licensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag
“Out of chaos comes order”

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
! “Free” as in “free speech” (not as in “free beer”, 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. Let’s 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 “always right” license
! Take time to decide on the right license type
! Changing licenses can be very difficult
! Avoid “vanity” 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