| Registered Users | 197,311 |
| protege-users list members | 17,291 |
| protege-discussion list members | 2,534 |
| protege-owl list members | 2,312 |
| Protégé 4.2 beta | May 11, 2012 |
| Protégé 4.1 | Jul 26, 2011 |
| Protégé 3.5 beta | May 9, 2012 |
| Protégé 3.4.8 | Jan 12, 2012 |
| WebProtégé 0.5 beta | May 28, 2011 |