Open-source PWA for isometric 3D diagramming with offline use, no sign-in, React and Isoflow codebase, auto-saving, privacy-focused local data, import/export as JSON, Docker optional storage, multilingual support, available on Mac and Linux.
Open Source Mermaid AlternativesDiagram Editors & UML Modeling Tools like Mermaid
The best open source alternative to Mermaid is FossFLOW. If that doesn't suit you, our users have ranked more than 25 alternatives to Mermaid and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mermaid are PlantUML, quiver diagram editor, Graphviz and Kroki.
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Mermaid alternatives are mainly Diagram Editors, but if you're looking for UML Modeling Tools or Mind Mapping Tools you can filter on that. Other popular filters include Diagram Editor and Open Source. These are just examples - use the filter bar below to find more specific alternatives to Mermaid.
Alternatives list
26 FossFLOW alternatives
118 PlantUML alternativesPlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- Chrome OS
Efficient web-based tool for constructing high-quality commutative diagrams. Offers LaTeX export with embedded links, intuitive interface supporting both mouse and keyboard inputs, and features like multiple selections, macro support, and smart label alignment.
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57 Graphviz alternativesGraphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design...
26 Kroki alternativesCreates diagrams from textual descriptions! It provides a unified API with support for BlockDiag, BPMN, Bytefield, C4 (with PlantUML), Ditaa, Erd, GraphViz, Mermaid, Nomnoml, PlantUML, SvgBob, UMLet, Vega, Vega-Lite, WaveDrom.
Penrose is a platform that enables people to create beautiful diagrams just by typing mathematical notation in plain text. The goal is to make it easy for non-experts to create and explore high-quality diagrams and provide deeper insight into challenging technical concepts.
DHTMLX is a set of JavaScript UI components for speeding up web app development. It offers ready-made widgets for project management apps, ERP and CRM systems, healthcare, educational, and financial software solutions. DHTMLX supports React, Angular, and Vue.
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53 Umbrello alternativesUmbrello is a Unified Modelling Language (UML) modelling tool and code generator. It can create diagrams of software and other systems in the industry-standard UML format, and can also generate code from UML diagrams in a variety of programming languages.
Cost / License
- Free
- Open Source (GPL-2.0)
Application types
Platforms
- Windows
- Linux
- Snapcraft
- Flathub
- Flatpak
24 ChartDB alternativesOpen source diagram editor for visualizing full database schemas via a single query in seconds, supporting MySQL, MariaDB, PostgreSQL, SQL Server, and SQLite, with AI-driven DDL export, image download, attractive sharing options, and advanced editing features.
53 Graphs alternativesGraphs is a simple, yet powerful tool that allows you to plot and manipulate your data with ease. You can import data from two-column files or generate it via an equation. All data can be manipulated using a variety of operations such as the ability to select, cut, translate...
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Linux
- Snapcraft
- Flathub
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Both can be integrated into markdown files.