Based on software developed with use-cases, a suite of metrics for the Product/Process (PP) complexity of software systems as well the PP complexity of each stage in the software development process—analysis, design, and testing—is provided. The metrics suite is important for software quality assurance—Validation and Verification (V&V) as well as for understanding new complexities brought into software development by new technologies. The metrics can be collected based on the two most important documents of use-case software development—scenario diagrams and state diagrams. All metrics are CASE tool computable. Thus, each iterative or incremental development process can be quantitatively measured and compared without incurring extra cost or load on the project team. Efficiency metrics for implementation and test stages, normalization rules and logic-metrics for business tables are also presented. A three-level software visualization approach may have impact on graphical programming or direct transformation.