UMLBoard is an easy-to-use UML class diagram tool with a clean, hand-drawn whiteboard style. It’s perfect for visualizing software designs, enhancing code documentation, or creating polished diagrams for presentations and publications.

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Reviews

“A lovely little app - Hold control, tap anywhere, and you get a thoughtfully designed modal to add an object. Do the same on a class object to add properties. And of course a simple drag to connect objects.”
5/5 – Mac App Store

“LOVED the interface! I've played with lots of UML tools, and this one really stands out. It's both simple and fun - this makes it a tool I want to come back to, where I can just focus on accomplishing what I want. Really appreciated how fast it was to lay out and manipulate designs.”
5/5 – Mac App Store

“Superbly Simplified Complexity - The app rides above all in other UML basedoverly cluttered apps. Feel more organic & real just like working with a rough pen & page.”
5/5 – Mac App Store

About This Software

UMLBoard is an easy-to-use UML class designer with a nice hand-drawn whiteboard look.

Whether you want to visualize an architectural concept, add additional documentation to your code, or need some nice looking diagrams for your presentation or publication: UMLBoard is the perfect tool for creating and editing UML class diagrams quickly and easily.

Say goodbye to complicated UML editors that require several steps and dialogs to change just a single class member: UMLBoard provides a clean and minimalistic user interface with in-place editing and full WYSIWYG support.

Some feature highlights:

  • Gives your diagrams a nice hand-drawn and sketchy look.

  • In-place-editing of properties and methods.

  • Export your diagram as a PNG or SVG image or as PDF or PlantUML text file.

  • Automatic connector routing which can easily be configured with custom anchor points.

  • Choose between different drawing styles: Sketchy, Enterprise and Too-much-caffeine.

  • Customize your diagrams with different fonts, background and colors.

  • Dark and light color themes.

  • Automatically propagate changes of your elements throughout the whole diagram.

  • Define custom stereotypes to give your classes specific domain roles

  • Validates your diagram and ensures compliance with UML rules.

No registration or subscription required, just install it, and you're ready to go!

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10, Windows 11
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10, Windows 11
    Minimum:
    • Requires an Apple processor
    • Processor: Apple Silicon
    Recommended:
    • Requires an Apple processor
    • Processor: Apple Silicon
    Minimum:
    • OS: Debian: 11 and later, Ubuntu: 24.04 and later
    Recommended:

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