mermaid open source analysis

Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown

Project overview

⭐ 84417 · TypeScript · Last activity on GitHub: 2025-12-01

GitHub: https://github.com/mermaid-js/mermaid

Why it matters for engineering teams

Mermaid addresses the practical need for clear, maintainable visual documentation within software projects by enabling engineers to generate diagrams directly from text. This open source tool for engineering teams simplifies the creation of flowcharts, sequence diagrams, and UML diagrams without relying on complex graphic software. It is particularly suited for software engineers, technical writers, and architects who need to embed diagrams in documentation or code repositories. Mermaid is mature and reliable enough for production use, with a strong community and frequent updates ensuring stability. However, it may not be the right choice if your team requires highly customised or interactive diagrams, as it prioritises simplicity and text-based input over advanced graphical features.

When to use this project

Mermaid is a strong choice when teams need a quick, production ready solution for generating diagrams as code that integrates seamlessly with documentation workflows. Consider alternatives if your project demands detailed visual design tools or interactive diagramming capabilities that go beyond text-based generation.

Team fit and typical use cases

Software engineers and technical writers benefit most from Mermaid by embedding diagrams within documentation and code comments to improve clarity and communication. Architects also use it to draft system designs in a straightforward, version-controlled manner. It commonly appears in developer portals, internal wikis, and documentation sites that require a self hosted option for diagram generation without adding complex dependencies.

Topics and ecosystem

diagrams diagrams-as-code documentation flowchart javascript mindmap typescript uml-diagrams

Activity and freshness

Latest commit on GitHub: 2025-12-01. Activity data is based on repeated RepoPi snapshots of the GitHub repository. It gives a quick, factual view of how alive the project is.