Software Design Diagram Tools

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Create use case diagrams, state diagrams, entity relationship diagrams, UML diagrams, and more for all your software design projects.

Design Software Easier with Visuals

With SmartDraw, building software is easier. We won't write the code for you, but we can help you plan and execute your design better through professional visuals that make communication and collaboration a breeze.

SmartDraw comes with dozens of software diagram templates. Pick a template that fits your project, click a few, simple commands and SmartDraw builds your diagram for you, automatically.

Top reasons SmartDraw is the perfect software diagram maker

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

Effortless Collaboration

You and your team can work on the same software design by sharing it on your included online account or by using your favorite file sharing apps like Dropbox^®, Google Drive^® , Box^® or OneDrive^®. You can also share files with non SmartDraw users by simply emailing them a link.

Smart Integration

Share your software design diagram in a variety of common graphics formats such as a PDF or PNG. You can also export it to any Office^® or G Suite^® application in just a few easy clicks.

Software Design Examples

SmartDraw has templates to make data flow diagrams, entity relationship diagrams, activity diagrams, class diagrams, component diagrams, object diagrams, and much more. If you need to visualize it, SmartDraw has the symbols and templates to help.