This talk focuses on what open source licensing is, how it should be applied inside & outside companies. It also looks at how Open Source != Free.

1. Open Source
Licensing
5 July 2012

2. Agenda
Information Sharing Session
What is open source?
Is using products built on open source the same as using
libraries or code?
We will look at public domain (i.e. I got this from a website)
We will look at creative commons (what StackOverflow uses)
We will look at how all this applies to BBD
We will look at suggestions to make sure your teams work with
open source better

3. What is Open Source
Origin from university when they had big/single machines
Only those listed & approved by the OSI
69 Licenses*
Permission from the developer for you to use their stuff
Permission may contain conditions
Open source applications does not always mean free
Open source code is royalty free
* As of July 2nd 2012

4. What can they restrict?
Internal only use
Distribution of software costs
Disclose source code
Disclose licenses
Include license in code and/or software
Block code in “DMCA-like” usage
Can I combine with other code which is differently licensed
Warrant & Liability exceptions
Force modified code to be the same license

5. Software vs. Source Code
Linux Kernel is GPL
Apache Web Server is APL
MySQL is dual license (Community is GPL)
Difference is code linking vs. code using

6. Public domain
Anything you find, anywhere, that is not explicitly license
Not explicit license does not mean no license
Actually means it is licensed & you have no rights to use it
DO NOT TOUCH
Or get permission from author & their employer

7. Creative Commons
Not a code or open source license
Meant for creative works (music, writing etc…)
May impact your team: StackOverflow
Key aspects:
Can use commercially
Can be modified
Can force CC licenses
Can force attribution
StackOverflow uses Attribution-ShareAlike 3.0
Can use commercially
Can be modified
Must be CC license
Must be attributed
How do we apply this?
Fair use snippets
Attribute

8. Suggestions
Approved OSI lists
Document it and include to customers
Attribute snippets in code
Include license files in a central folder
Education of teams

9. Questions?