Mermaid
Create diagrams and visualizations using text and code.
Some of the top features or benefits of Mermaid are: Ease of Use, Integration, Automated Diagrams, Cost-effective, and Support for Multiple Diagram Types. You can visit the info page to learn more.
- Open Source
Best Mermaid Alternatives & Competitors in 2025
The best Mermaid alternatives based on verified products, community votes, reviews and other factors.
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12
Open-Source Alternatives.
Latest update:
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PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
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Online diagramming application
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Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.
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Diagramly is an innovative tool that uses artificial intelligence to convert text descriptions or images into editable diagram code.
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JavaScript based diagramming tool that renders Markdown-inspired text definitions to create and modify sequence diagrams dynamically.
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A smarter way to create diagrams
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Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
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Graphviz is open source graph visualization software. It has several main graph layout programs.
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Simplify and communicate complex information using data-linked diagrams.
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StarUML
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Interactive system architecture diagrams for cloud, software, platform, and security engineers
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The C4 model for visualising software architecture. Context, Containers, Components, and Code.
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Draw, LibreOffice, ODF, open standards, creative software, vector drawing
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yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
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