Finding a Free, Online UML Tool?

Here is an online UML tool that's both wonderfully easy to use and refreshingly intuitive - Visual Paradigm Online. With features like Resource Catalog, alignment guide and a rich set of formatting functions, you can draw UML diagrams conveniently and quickly. Visual Paradigm Online Free Edition is free for non commercial use. It supports UML, ER Diagram and Org. Chart tools. You can create unlimited number of UML drawings, ERDs and org and with unlimited number of shapes. Charts. Advanced diagram types such as Flowchart, ArchiMate, BPMN, mind map are all available in higher editions in very low cost.

Open the Diagram Editor

Draw marvelous UML diagrams quickly

Truly Free

An effectively free UML tool for students, educators and other non profit use:

Unlimited number of diagrams and shapes
Won't expire
No ad

Draw UML with ease

Visual Paradigm Online is ridiculously easy to use even for beginners: No training required!

Drag and drop based UML diagram tool
Automatic connector re-routing
Automatic shape positioning with alignment guide
Abundant arrows, connector and formatting options

More than UML...

As a versatile free diagramming software, you can also draw ERD, organization chart, floor plan, business concept map and ITIL diagram with Visual Paradigm Online Free Edition. More diagrams are available in paid editions.

Key features and benefits

Unlimited period of access
Unlimited number of diagrams
Unlimited number of shapes
All-in-One: UML tool, ERD tool, Org. Chart editor, Floor Plan tool, ITIL, Business Concept Diagram
Flexible upgrade options for more diagram types and features
Cross-platform supported, works well on Windows, Mac, Linux.
Easy to use: Total drag-and-drop shape creation. Automatic shape alignment for neat, crisp drawings.
Rich set of formatting and styling tools help produce engaging diagrams easily.
Free cloud workspace for saving your UML drawings.
Seamless transition from Visio through Visio import.
Vast export capabilities, including PNG, JPG, SVG, GIF, PDF.
Extensive built-in UML templates available to use.
Auto expanded canvas allows diagram in unlimited dimension
Insert your own images to boost visual expression.

But don't take our word for it

Try it yourself. Just browse the UML Diagram examples below and click Open Diagram to open and edit. You will see for yourself that it is everything we say it is, or perhaps more.