Finding a web-based diagram software that's free?

Visual Paradigm Online is an all-in-one diagramming solution that offers a ton of diagramming tools and a range of diagram types that covers different purposes like technical design, business design and general purposes. Its Free Edition is free for non-commercial use and support drawing UML, ER Diagram and Organization Chart. The drawing tool offers hundreds of diagram examples that you can use or customize to your likings. VP Online supports different web browsers. Although it's free, you can draw unlimited number of diagrams and shapes, and export your diagrams into images.

Open the Diagram Editor

Create fantastic technical and business drawings

Real Free Software

Start drawing diagrams free!

Unlimited no. of diagrams and shapes
No ads

Simple & Fast

Create professional diagrams with our online drawing software. Some of the editing features:

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

All-in-One Diagram Tool

A full-fledged diagramming software that support popular diagrams like UML, ERD, Organization Chart, Floor Plan, Business Concept and ITIL. You may upgrade to a paid edition for diagrams like Flowchart, BPMN, ArchiMate, Mdin Map, PERT, DFD, SWOT, etc.

Key features and benefits

Unlimited period of access
Unlimited number of diagrams
Unlimited number of shapes
UML Tool, ERD Tool, Organization Chart Maker, Floor Plan Designer, Business Concept Diagram, ITIL
Can be upgraded to paid editions for more diagram types and features
Works on all OS (Windows, Mac, Linux) and compatible with all web browsers
Easy to use: Create and connect shapes with drag and drop. Connectors are always attached 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
Build your own shape library to create diagrams with your own shapes.
Easily add text, notes, external images, web links to diagram
Print and export into different formats (PNG, JPG, SVG, GIF, PDF)
Hundreds of start-up diagram examples and diagram templates
Save your drawing in Google Drive
Visio drawing and stencil import

But don't take our word for it

Try it yourself. Just browse the 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.