UML Diagram Software

Start with the exact UML diagram template you need. SmartDraw has templates for class diagrams, use case diagrams, sequence diagrams, state diagrams, activity diagrams, and more. Add boxes and components with a few clicks, add your information, and our UML diagram software does the rest, aligning everything and applying professional design themes for great results every time.

What is UML?

A Unified Modeling Language diagram combines the Booch, OMT, and OOSE methods to simplify, describe, and explain complex business processes. There are nine types of UML diagrams: class (package), object, use case, sequence, collaboration, state chart, activity, component, and deployment. For more information on these, please visit our "How to Create UML Diagrams" section. Each are constructed fairly similarly with a few minor differences.

UML diagrams are put to use any time a system or process needs to be put in a more comprehensible form. UML diagrams are widespread and used by numerous system and software companies. UML is specifically designed for software engineers and can be easily translated into other programming languages.

Top reasons SmartDraw is perfect for UML design:

  • Automatic UML Formatting
    Click simple commands and SmartDraw builds your UML diagram for you, automatically. Add or remove a shape, and our UML diagram software realigns and arranges all the elements so that everything looks great.
  • Quick-Start UML Templates
    Dozens of professionally-designed UML diagram examples make you instantly productive. Simply choose the template that is most similar to your project, and customize it to suit your needs.
  • Free Support
    Got a question? Call or email us. SmartDraw experts are standing by ready to help, for free!

Discover why SmartDraw is the perfect UML diagramming software. Try SmartDraw FREE.