The best UML Modeling alternative to SAP PowerDesigner is Enterprise Architect. If that doesn't work for you, our users have ranked more than 25 alternatives to SAP PowerDesigner, but unfortunately only two of them are UML Modeling Tools.
High performance and scalable visual modeling tool for the planning, design and construction of business architectures, software and systems. With customers based in all industries, Sparx Systems is a leading vendor of innovative modeling solutions.
Rational Software Architect is an object-oriented Unified Modeling Language (UML) software design tool intended for visual modeling and component construction of enterprise-level software applications.
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