Ontologies are, as a part of semantic web, a basic component to enrich content available in the Internet with a meaning understandable for computers. In this publication an architecture and functionality of a domain oriented web portal for collaborative creation and storage of ontologies is presented. The system is being created by Gdańsk University of Technology Electronics, Telecommunications and Informatics faculty's Department of Computer Architecture. Most important elements of presented system that distinguish it form other similar solutions are shown. The method for storing data and database access is described as well. Object to triple and triple to object conversion and methodology for collaborative ontology development used in presented system was described as well.