The best Diagram Editor alternative to Mermaid is yEd Graph Editor, which is free. If that doesn't suit you, our users have ranked more than 25 alternatives to Mermaid and 18 are Diagram Editors so hopefully you can find a suitable replacement. Other interesting Diagram Editor alternatives to Mermaid are PlantUML, quiver diagram editor, Graphviz and Kroki.
yEd is a powerful diagram editor that can be used to quickly create diagrams manually or import external data for analysis and auto-magically arrange even large data sets by just pressing a button. You can use yEd to quickly create flow charts, BPMN and UML diagrams...
Germany
EU
PlantUML 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.
FranceEU
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.
United Kingdom
Graphviz 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...
United States
Creates 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.
Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified Modeling Language (UML) 2.4, SysML, ERD, DFD, BPMN 2.0, ArchiMate 2.0, etc.
Hong Kong SAR China
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.
United States
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.
Umbrello 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.
GermanyEU
Open 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.
Diagramly is an innovative tool that uses AI to convert text descriptions or images into editable diagram code. It supports popular formats like Mermaid and ZenUML, allowing users to easily create and maintain professional diagrams.
United Kingdom
Cloud-based diagram creation platform hosting draw.io diagrams, featuring real-time collaboration in a shared workspace. Supports flowcharts, cloud architecture (AWS, Azure, GCP), UML, ER, network diagrams, seamless import/export, and modern, intuitive interface.
