Use Case Diagram Tool
You don't build a house without a blueprint, right? The same should go for building software. Use Lucidchart to create UML diagrams that will serve as efficient blueprints.
99% of the Fortune 500 trust Lucidchart to keep teams on the same page.
Get Started with UML Diagram Examples
Whether you're working by yourself, with a client, or on a design team, you'll find an option that's right for you. Start out with Lucidchart's free use case diagram tool or test the premium features through a free trial. Because of our thriving community of software developers, Lucidchart's Community Library has many UML diagram examples. Check them out to spark an idea or answer questions.
Make a UML diagram
FLEXIBLE AND FREE
Draw use case diagrams, state diagrams, activity diagrams, and more. With an extensive shape and connector library, you'll find everything you need.
DRAW TOGETHER
Lucidchart's collaborative UML tool enables teams to come together online and work in real-time without a single download or system update.
PUBLISH AND SHARE
Share your UML diagram by embedding it in a blog, wiki, or website. You can even export your diagram as an image and include it in a document or presentation.
Feature Highlights
Make your own professional diagrams with our intuitive software.
Diagrams made easy
Our drag-and-drop editor makes it easy to arrange your diagram elements just the way you like. Just click and drag your mouse to connect shapes with a line, and even add an image to make your diagram stand out. Our intuitive interface keeps it simple.
Visio import/export
We’re here to help you get your work done right, without stress. We make Microsoft Visio file imports and exports easy so there’s no need to do anything twice. Plus, you can continue to work with any of your colleagues who haven’t made the switch from Visio yet.
Fully integrated
Lucidchart is integrated with the Google Apps productivity suite, so you can use your existing Google login and sync with Google Drive. Lucidchart also puts content from YouTube, Dropbox, and Facebook right at your fingertips. Everything you need is right here.
Publish and share
We’ll help you make a professional-looking diagram that you’ll want to share, and then we’ll help you spread the word. Publish your work as a PDF or image and easily include it in a report or presentation. Or embed it right on your webpage!
Create any diagram in Lucidchart
Flowcharts
Org Charts
Process Maps
ER Diagrams
Network Diagrams
And More
Over 15 million users
trust Lucidchart to keep them on the same page.
