Protégé is a free, open source software platform for building applications in the field of artificial intelligence and knowledge engineering. It provides an environment for users to build ontologies, which are structured models of data and knowledge. Ontologies are used to represent information in a formal and consistent way, allowing for the integration of data from multiple sources. Protégé is used to create ontologies for a wide variety of applications, such as natural language processing, information retrieval, semantic web, data integration, and many others. It supports a variety of programming languages, including Java, Python, RDF/OWL, and SPARQL. Additionally, it provides a web-based interface for easy access to the ontologies. Protégé is a powerful and comprehensive tool for building knowledge-based applications and is used by many organizations and individuals around the world.
Discontinued The last commitment to the GitHub repository was made on October 8, 2015.