The usefulness of ontology is strongly dependent on the knowledge representation policy and its maintenance. The subject of knowledge representation and modeling tool has been one of the exciting themes among ontology scientists. Some ontology editing tools were born and grew up in the field of expert system and others designed originally by ontology research groups. Key features of the newly implemented tool are: reference to the concept dictionary to find out semantics of the words, and use of inference algorithm provided by Schank’s Memory Organization Package. Satisfactory results were obtained in the application of ontology modeled by the present tool. This paper describes the implementation of the tool and its effectiveness in solving some actual problems of enterprise integration. Categories and Subject Descriptors H.5.2 [Information Interfaces and Presentation]: User Interfaces – graphical user interfaces (GUI), user-centered design. General Terms: Design.