Top Open Source Licenses

Our open source license chart illustrates the most frequently open source licenses currently used in open source projects, as tracked in the Black Duck Knowledge Base. This open source licensing data reflects analysis of over two million open source projects from over 9,000 global forges and repositories.

top open source licenses chart

Rank License %
1. MIT License 32%
2. GNU General Public License (GPL 2.0) 18%
3. Apache License 2.0 14%
4. GNU General Public License (GNU) 3.0 7%
5. BSD License 2.0 (3-clause, New or Revised) License 6%
6. ISC License 5%
7. Artistic License (Perl) 4%
8. GNU Lesser General Public License (LGPL) 2.1 4%
9. GNU Lesser General Public License (LGPL) 3.0 2%
10. Eclipse Public License (EPL) 1%
11. Microsoft Public License 1%
12. Simplified BSD License (BSD) 1%
13. Code Project Open License 1.02 1%
14. Mozilla Public License (MPL) 1.1 < 1%
15. GNU Affero General Public License v3 or later < 1%
16. Common Development and Distribution License (CDDL) < 1%
17. DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE < 1%
18. Microsoft Reciprocal License < 1%
19. Sun GPL with Classpath Exception v2.0 < 1%
20. zlib/libpng License < 1%