Microsoft Visio (formerly Microsoft Office Visio) is a diagramming and vector graphics application and is part of the Microsoft Office family. Developed by Microsoft
License: Commercial
UMLet is a lightweight, open-source tool focused primarily on UML diagrams, making it ideal for users seeking simplicity and customization without cost. In contrast, Microsoft Office Visio offers a comprehensive suite of diagramming tools with advanced features and tight integration with Microsoft products, but at a higher cost and complexity.