Diagramming on Confluence

ZenUML is an all-in-one solution for diagraming on Confluence pages. It comes with built-in stencils for any kind of diagrams.

A distinguished capability of ZenUML is its support of diagram-as-code. If you are tired of drag-n-drop, you will find it convenient to just type in your diagram.

“Visio File Icon” vs “ZenUML Diagram”

Are you a fan of diagram-as-code?

Compliant with standard

The produced diagram is Compliant with the latest standard UML 2.5.1 with enhanced visual effects that make the diagram more readable.

Data privacy and security

Your content is only stored with your pages. Saving/loading your document/diagrams is directly between your browser and Atlassian’s servers, no storage or transit through third-party servers including ours.

Diagram as code

ZenUML, as a text-based diagramming tool allows for quick and easy updates of your diagrams, without bothering on drag-and-drop.

Other Products

Our products are also available as online webapp, Google Chrome Extension and JetBrains plugin.

Online Webapp

Simply open the webapp and create your diagram immediately

Google Chrome Extension

Real-time & offline tool for generating sequence diagrams

Jetbrains Plugin

Provides the capability to generate sequence diagram from text within the IDE and see the rendered HTML in a live preview

Our Partners

50,000+ people have used ZenUML, including employees from


We have a subscription-based pricing model on Atlassian Marketplace:

Up to 10 users

$1 montly flat fee

11 – 100 users

$0.4 per user per month

101 – 250 users

$0.30 per user per month

For higher tiers and Server or Data Center versions, see our pricing on Atlassian Marketplace.

What Our Customers Are Saying

Love it!

ZenUML has the most intuitive DSL among all the diagram-as-code tools for sequence diagrams. It helps me clear the logic in a system. Nice work!

Kushagra Mehra

Senior Service Architect, National Australia Bank

Nice tool! Keep it up

ZenUML is a super neat tool that has helped my team documenting the design and enabled valuable conversation between our architect and the delivery team.

Jeff Xiong

Office Principle, ThoughtWorks

Great support!

We migrated to ZenUML from another tool recently. The support team helped us to convert all our diagrams. Amazing support!

Lillian Kithikii

Senior BA, LitheKongsulting