DGM is an online tool for creating sketchnotes, diagrams, and technical schematics built for professional workflows. Itβs designed for UML, ER diagrams, flowcharts, and UI wireframes, making it a practical fit for developers, analysts, and designers.
Diagram libraries and smart shapes
DGM lets you build diagrams from ready-made element libraries, including common notations and templates.
- UML, ERD, Flowchart, and UI prototyping libraries
- βSmartβ shapes that understand connections and context to reduce manual edits
- Faster assembly of complex structures using consistent components
Collaboration and local use
The editor supports real-time co-editing, so teams can review and iterate together during calls, architecture reviews, and planning sessions.
- Live collaboration with changes visible immediately
- A βfree foreverβ mode for working with local files, useful for personal and small projects
Vision AI and diagram-to-code
DGM also includes an experimental AI assistant based on GPT-4 Vision. It can interpret diagram structure and help generate code from a visual model.
- Diagram recognition to extract structure
- Draft code generation based on an existing diagram

