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All Things Open 2017: Open Source Licensing
The document discusses open source licensing and provides an overview of key concepts: - It introduces Jim Jagielski and his background in open source software development. - Licensing determines how software can be used, modified, and shared. Choosing the right license is important to avoid legal risks. - Common open source licenses include permissive licenses like MIT, weak copyleft licenses like LGPL, and strong copyleft licenses like GPL. The license chosen depends on goals like commercial use or community development.
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All Things Open 2017: Open Source Licensing
- 1. Jim Jagielski ||@jimjag OPEN SOURCE LICENSING 101
- 2. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag ABOUT ME • Apache Software Foundation • Co-founder, Director, Vice Chairman, Member and Developer • Director • Outercurve, MARSEC-XL, OSSI, OSI (ex)… • Developer • Much FOSS projects • IANAL • Sr. Director: Tech Fellows: Capital One
- 3. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag WHAT’S IN YOUR PROJECT?
- 4. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag GOVERNANCE/COMMUNITY
- 5. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag WALLED GARDEN
- 6. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag BDFL “Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony!”
- 7. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag MERITOCRACY “Out of chaos comes order”
- 8. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag LICENSES
- 9. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag WHY? • Copyright is the default • Open Source is everywhere • The license determines use, re-use and distribution • Not understanding means risk
- 10. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag LICENSE GOALS • Ensure what parts remain open source/free • 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
- 11. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag 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
- 12. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag 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
- 13. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag PROMISES
- 14. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag LET’S PRETEND ==
- 15. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag PROMISE #1: USE
- 16. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag PROMISE #2: MODIFY
- 17. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag PROMISE #3: SHARE
- 18. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag LICENSES
- 19. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag GIVE ME CREDIT Permissive: ALv2 MIT BSD
- 20. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag GIVE ME FIXES Weak Copyleft: EPL LGPL
- 21. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag GIVE ME EVERYTHING Strong Copyleft: GPLv2 GPLv3 AGPL GPL GPL GPLGPL GPL GPL GPL GPL GPL GPL
- 22. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag 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!
- 23. This work islicensed under a Creative Commons Attribution 3.0 Unported License. - Jim Jagielski - @jimjag @jimjag THANKS! • Jim Jagielski • @jimjag (follow me!) • www.linkedin.com/in/jimjag/ • http://slideshare.net/jimjag/