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

WebProtege 0.5 beta

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Please note that in Protégé 4.1 and 4.2 alpha, end users may choose between a platform independent installer program, a plain ZIP file, or an application bundle to install Protégé. For more information about how to choose an install method, read the "How do I install Protege-OWL" question in the FAQ.

• Download Protégé - platform independent installer program
• Download Protégé - ZIP file (no 1.6 VM, no executable file included)
• Download Protégé - OS X application bundle
• View release notes
• View javadoc

• Download Protégé - platform independent installer program
• Download Protégé - ZIP file (no 1.5 VM, no executable file included)
• Download Protégé - OS X application bundle
• View release notes
• View javadoc

• 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