UML Diagram Tool

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Create UML diagrams and other software design drawings

Create UML Diagrams

SmartDraw helps you plan software projects with the help of UML diagrams. Start with the exact UML 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.

Top reasons SmartDraw is perfect tool for UML diagrams:

Automatic 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.
Works on Any Device
Use SmartDraw on your computer, browser or mobile device—Windows^®, Mac^®, Android^®, iOS^®, or any other platform with an internet connection. Whether you're in the office or on the go, you'll enjoy the full set of features, symbols, and high-quality output you get only with SmartDraw.
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
Have a question? Call or email us. SmartDraw experts are standing by ready to help, for free!

Smart Integration

Share your UML diagram in a variety of common graphics formats such as a PDF or PNG, or export it to any Office^® application in one click. SmartDraw works with popular services such as Dropbox^®, Google Drive^™, and OneDrive^®.

UML Examples

The biggest advantage to using SmartDraw are the templates and examples included. If you are just starting out, you may also find our examples helpful before building your first UML diagram.