Finding a Free UML Tool?

Visual Paradigm Online (VP Online) Free Edition is a free online drawing tool that supports UML, ERD, Organization Chart, etc. It features a simple, intuitive yet powerful UML editor, which allows you to create professional UML diagrams smoothly and quickly. The free UML tool comes with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes, etc. You own the diagrams you created for personal and non-commercial purposes.

Open the Diagram Editor

Drawing professional UML Diagram quickly and freely

Free UML Editor

Free UML Diagram tool for personal use:

No limited number of diagrams and shapes
No limited period of access
No ad

Draw as many diagrams as you like. Output and share as PNG/JPG/GIF/SVG/PDF.

Powerful UML Editor

UML diagramming can be simple and fun. Here are some of the features of our UML Diagram editor:

Drag-to-create shapes and connectors
Well attached connectors (no separate apart)
Draw your own diagrams with your own shapes
Hundreds of diagram examples and templates

Impressive UML Diagrams

Precisely position shapes and connectors with alignment guide. Format your UML Diagrams with formatting options and tools such as shape and line formatting, font style, shape alignment and distribution, embed image and URL, shadow effect, etc

Key features and benefits

Unlimited period of access
Unlimited number of diagrams
Unlimited number of shapes
UML Tool, ERD editor, Org. Chart editor, Floor Plan tool, ITIL, Business Concept Diagram
Can be upgraded to paid editions for more diagram types and features
Cross-platform: Windows, Mac, Linux. Compatible with all web browsers
Easy to use: Create and connect shapes with drag and drop. Connectors will snap to shapes and never separate apart.
Apply different formatting options (shape and lines, solid and gradient paint), 40+ connector types, RTF caption, font options, shadow effect, etc
Draw your own diagrams with your own shapes.
Visio drawing and stencil import
Print, export and share your work in different formats (PNG, JPG, SVG, GIF, PDF)
Get start quickly with hundreds of diagram examples and diagram templates
Google Drive integration
Easily embed text, external images and web links to diagram

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.