Software Architecture & UML Unified Modeling Language Tools: use cases, class, sequence, object diagrams
Unified Modeling Language (UML) Resources
UML Resource Page of the Object Management Group
Unified Modeling Language in Wikipedia
List of Unified Modeling Language tools in Wikipedia
Unified Modeling Language UML, Data Modeling and Software Architecture
Understanding the Unified Modeling Language (UML)
Understanding Use Case Modeling
Static and Dynamic Approaches in UML