| MIT License | 209 |
| Apache Software License 2.0 | 95 |
| proprietary license | 77 |
| GNU General Public License | 67 |
| GNU General Public License, version 2.0 | 49 |
| Apache License | 45 |
| GNU General Public License, version 2.0 or later | 39 |
| GNU Lesser General Public License | 36 |
| 3-clause BSD License | 35 |
| GNU General Public License, version 3.0 | 33 |
| BSD licenses | 23 |
| GNU General Public License v3.0 or later | 21 |
| GNU Lesser General Public License, version 2.1 | 15 |
| 2-clause BSD License | 13 |
| GNU Lesser General Public License, version 2.1 or later | 11 |
| Mozilla Public License, version 2.0 | 9 |
| zlib License | 9 |
| freeware | 8 |
| GNU Lesser General Public License, version 3.0 | 7 |
| Artistic License | 6 |
| Eclipse Public License | 6 |
| Eclipse Public License 2.0 | 6 |
| end-user license agreement | 6 |
| Expat license | 6 |
| GNU Affero General Public License, version 3.0 | 6 |
| Mozilla Public License | 6 |
| GNU Affero General Public License | 5 |
| commercial software | 4 |
| GNU Affero General Public License, version 3.0 or later | 4 |
| GNU Lesser General Public License, version 3.0 or later | 4 |