plantuml.com 的前十大競爭對手

app.diagrams.net

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

mermaidchart.com

Mermaid Chart makes diagramming simple: create and edit flowcharts, sequence diagrams, and more online. Collaborate in real time and save hours.

eraser.io

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drawio-app.com

Interactive Tutorials What better way to learn how to use draw.io than from within the tool? Discover how to use draw.io directly in the diagram editor itself. Try it free Watch a demo Interactive Tutorials What better way to learn how to use draw.io than

sequencediagram.org

Free sequence diagram online tool. Create sequence diagrams using textual notation or draw quickly via Drag and Drop with an easy to use interface.

websequencediagrams.com

Draw sequence diagrams in seconds using this free online tool.

visual-paradigm.com

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sparxsystems.com

Make your vision a reality with fast, intuitive modeling & design for systems, software, processes and architectures.

uml-diagrams.org

the unified modeling language (uml) is a standard visual modeling language to document business processes and software architecture using several types of diagrams - use case diagrams, class, package, component, composite structure diagrams, deployments, activities, interactions and profiles. the site provides graphical notation reference and examples of all types of uml diagrams.