understanding open source licenses
TRANSCRIPT
This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
UNDERSTANDING OPEN SOURCE LICENSES
Jim Jagielski
@jimjag
@AllThingsOpen | #ATO2015
AKA: How I learned to stop worrying and love the LICENSE
@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
ABOUT ME๏ Apache Software Foundation
๏ Co-founder, Director, Member and Developer
๏ Director
๏ Outercurve, MARSEC-XL, OSSI, OSI (ex)…
๏ Developer
๏ Mega FOSS projects
๏ IANAL
๏ Consulting S/W Engineer: Red Hat
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
ABOUT ME๏ Apache Software Foundation
๏ Co-founder, Director, Member and Developer
๏ Director
๏ Outercurve, MARSEC-XL, OSSI, OSI (ex)…
๏ Developer
๏ Mega FOSS projects
๏ IANAL
๏ Consulting S/W Engineer: Red Hat
๏ Sr. Director: Tech Fellows: Capital One
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This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
WHAT’S IN YOUR LICENSE?
@AllThingsOpen | #ATO2015
@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
WHY?๏ Copyright is the default
๏ Open Source is everywhere
๏ The license determines use, re-use and distribution
๏ Not understanding means risk
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
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
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
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
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
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
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PROMISES
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LET’S PRETEND
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==
@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
USE
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
MODIFY
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SHARE
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
LICENSES
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
GIVE ME CREDIT
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Permissive: ALv2 MIT BSD
@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
GIVE ME FIXES
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Weak Copyleft: EPL
LGPL
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GIVE ME EVERYTHING
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Strong Copyleft GPLv2 GPLv3 AGPL
@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
FINAL THOUGHTS๏ There is no true one Open Source license
๏ Take time to understand licenses (it can be very difficult to change)
๏ Differences between same type
๏ Choose the right license
๏ Different license for different needs/goals
๏ Don’t pick because it’s “popular”
๏ Don’t modify a license (or UGG! try to make a new one)
๏ Choose a license!
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@AllThingsOpen | #ATO2015This work is licensed under a Creative Commons Attribution 3.0 Unported License. All images property of their respective copyright holders
THANKS๏ Jim Jagielski
๏ @jimjag
๏ http://www.jimjag.com/
๏ http://slideshare.net/jimjag/
๏ http://youtube.com/user/jimjagski
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