A tool to create and manage ontologies that can be later exploited for, e.g., system artefact quality analysis (with RQA - Quality Studio) and traceability management (with Traceability Studio). The ontologies consist of: (1) Terminology, syntactic information, e.g. ‘car' is a noun; (2) Conceptual Model, semantics e.g. 'car' can be 'system', 'vehicle'; (3) Patterns, for structured system information; (4) Formalization, dealing with the semantic representation of system information according to patterns, and; (5) Inference Rules, with procedures to derive information.