Not sure which version of Protégé is right for you? Please refer to our very helpful side-by-side comparison of P3 vs. P4 on the Protégé wiki.

WebProtege 0.5 alpha

---

Protégé 4

Please note that in 4.0, end users may choose between a platform independent installer program or a plain ZIP file to install Protégé. For more information about why you may want to choose one method over the other, read the "How do I install Protege-OWL" question in the FAQ.

Protégé 4.0 Release

• Download Protégé - platform independent installer program
• Download Protégé - ZIP file (no 1.5 VM, no executable file included)
• View release notes
• View javadoc
• View source code (with ViewVC)
• View bug database
• View feature request list

Protégé 3

Protégé 3.4.1 Release

• Download Protégé - platform independent installer program
• View release notes
• View javadoc for Core Protégé and Protégé-Frames
• View javadoc for Protégé-OWL
• Get source code for Core Protégé and Protégé-Frames
• Get source code for Protege-OWL
• Get source code for the Standard Extensions Library