A domain model generator (DMG) for an integrated development environment (IDE) guides a software engineer through a process of identifying domain-specific concepts for a domain of an object-oriented software application. The DMG also helps the engineer to classify the domain-specific concepts as pertaining to particular object-oriented modeling concepts for the object-oriented software application. Those modeling concepts may include classes, attributes, inheritance, etc. In addition, the DMG may automatically generate a Unified Modeling Language (UML) domain diagram, based at least in part on the domain-specific concepts and the corresponding modeling concepts. Other embodiments are described and claimed.