https://onuml.com/edit
Free Online UML Editor with AI - Mermaid, PlantUML & Draw.io Support | OnUML
Free online UML editor with AI assistance. Create Mermaid, PlantUML and Draw.io diagrams with live preview, repair syntax, and export to PNG/SVG. No signup...
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https://www.startertutorials.com/uml/uml-diagrams-document-editor.html
Document editor UML diagrams - Startertutorials
Dec 31, 2025 - Contains UML diagrams for document editor like class diagram, use case diagram, component diagram, deployment diagram, and more.
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