To help a user determine which version of Protégé to use, refer to the comparison on the Stanford website.

For current users:

• Protégé 3 User Docs
• Protégé 4 User Docs 

For developers:

• Protégé 3 Dev Docs
• Protégé 4 Dev Docs

For everyone:

• Protégé User's Guide
• Protégé-Frames User's Guide
• Protégé Plug-In Library

Tutorials:

• Protégé 3 Tutorial
• Protégé 4 Tutorial
• Protégé Client-Server Tutorial
• Protégé-OWL Tutorial