Finding a Free Class Diagram Tool?

Visual Paradigm Online (VP Online) Free Edition is a FREE online drawing software that supports Class Diagram, other UML diagrams, ERD tool and Organization Chart tool. It features a simple yet powerful editor that allows you to create Class Diagram quickly and easily. The free UML editor 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.

Make a Class Diagram

Speedily draw Class Diagram

Free UML Software

Draw Class Diagram for personal use for free:

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

Draw as many diagrams as you like. Export your drawing into PNG/JPG/GIF/SVG/PDF.

Simple Yet Powerful

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

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

Impressive Drawing

Position shapes precisely using the alignment guide. Format your Class Diagram with an array of formatting tools: Shape and line format, font style, rotatable shapes, 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 Diagram Tool, ERD Tool, Organization Chart Maker, Floor Plan Designer, 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
Visio drawing and stencil import
Draw your own diagrams with your own shapes.
Easily embed text, external images and web links to diagram
Get start quickly with hundreds of diagram examples and diagram templates
Print, export and share your work in different formats (PNG, JPG, SVG, GIF, PDF)
Google Drive Integration

But don't take our word for it

Try it yourself. Just browse the Class 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.