Protege (Software)

High Quality Content by WIKIPEDIA articles! Protege is a free, open source ontology editor and a knowledge acquisition system. Like Eclipse, Protege is a framework for which various other projects suggest plugins. This application is written in Java and heavily uses Swing to create the rather complex user interface. Protege recently has over 100,000 registered users. Protege is being developed at Stanford University in collaboration with the University of Manchester.