Licenses in the WILD

My slides for the #aas225 panel discussion on software licensing practices.

Transcript

1. ! " # $ CCPP@NYU dfm dfm.io @exoplaneteer Dan Foreman-Mackey
2. I don't know anything about licensing!
3. but...
4. I do know about data science!
9. 28,569,100 largest public repo ID (as of 2014-12-28)
10. 5,000 requests/hour rate limit
11. a few requests/repo required
12. 1,578,967 repositories ("randomly" selected)
13. 6% of the GitHubz (representative)
14. { "name": "emcee", "full_name": "dfm/emcee", "language": "Python", "fork": false, "subscribers_count": 39, "forks": 117, "stargazers_count": 414, "open_issues": 35, ... } + README*, LICENSE*, COPYING* for each repository, download: in the top directory
15. JavaScript Ruby Java Python PHP C C++ CSS C# Objective-C Shell Perl VimL 0 2 4 6 8 10 12 percentage of repos
16. 63 languages more popular than IDL (only?)
17. 1,578,967 repositories
18. 263,288 are licensed
19. 17% are licensed that's up from 15% in 2012! softwarefreedom.org/resources/2013/lcs-slides-aaronw
20. 28,972 only mention the license in the README of these,
21. JavaScript Ruby Java Python PHP C C++ CSS C# Objective-C Shell Perl VimL 0 5 10 15 20 25 30 percentage with a license
22. license popularity
23. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 35 40 percentage of licensed repos all repositories
25. EXCITED about licensing the internet gets really
26. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 35 40 percentage of licensed repos all repositories
27. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 percentage of licensed repos Python
28. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 percentage of licensed repos IDL
29. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 10 20 30 40 50 percentage of licensed repos C
30. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 35 40 percentage of licensed repos Fortran
31. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 10 20 30 40 50 60 percentage of licensed repos Emacs Lisp
32. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 10 20 30 40 50 percentage of licensed repos VimL
33. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 35 40 percentage of licensed repos all repositories
34. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 10 20 30 40 50 60 percentage of licensed repos JavaScript
35. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 10 20 30 40 50 60 70 percentage of licensed repos Ruby
36. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 5 10 15 20 25 30 35 40 percentage of licensed repos all repositories
37. MIT License GPL Apache License BSD unknown LGPL Public Domain Eclipse Public License Creative Commons A↵ero GPL Mozilla Public License Artistic License ISC license 0 10 20 30 40 50 popularity weighted percentage all repositories (weighted by popularity)
38. ⾠CAVEATS I only scraped GitHub
39. I only found top-level license files (with the right names) ⾠CAVEATS
40. my README parsing was pure hack! (it's called data science) ⾠CAVEATS
41. 17% of repos are licensed and the kids are permissive TAKE HOME Thanks to Aaron Williamson for the 2012 data!