SmartDraw can generate a visual representation of your code from your repository on GitHub or your local computer. You can create a UML class diagram without any drawing at all. Visualize …

draw.io is free online diagram software for making flowcharts, process diagrams, org charts, UML, ER and network diagrams

Our UML diagram generator is cloud-based, so you can create, save, and collaborate on your UML diagrams from anywhere, no matter what device, browser, or operating system you work …

Create simply and freely UML diagrams from your browser thanks to PlantUML Web Server. Just enter a text diagram, and get the result in PNG or SVG format.

Aug 14, 2025 · For UML diagram creation, excellent free tools include Astah, Miro, EdrawMax, and Adobe Express, each offering distinct features and methodologies to enhance your …

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 …

Whether you want to build class diagrams, sequence diagrams, or use-case diagrams, Creately makes it easy to create UML diagrams online quickly and accurately, with seamless sharing …

Free online diagram editor. Create, edit and share UML diagrams with an intuitive interface. Support for PlantUML syntax, real-time preview, and collaboration features.

Design clean UML class diagrams online with our UML class diagram maker—free and AI‑powered. Add classes, members, stereotypes, relationships. Customize, zoom, and export …

Customize your UML activity diagrams using colors and connectors to map out processes clearly from start to finish. Get started in seconds with our pre-built UML templates.