Open source mermaid projects
Every project in the registry tagged mermaid, ranked by real GitHub adoption.
38 editorial diagram types for Claude Code, Codex, and Pi. Self-contained HTML + SVG. No shadows. No Mermaid slop.
Visualize any GitHub codebase: free interactive architecture diagrams and one-minute explainer videos. Replace 'hub' with 'diagram' in any GitHub URL.
tbls is a CI-Friendly tool to document a database, written in Go.
Turn complex codebases into clear, navigable architecture diagrams with Claude Code.
Multi-framework streaming Markdown renderers for AI apps: Vue/Nuxt, React/Next.js, Svelte, and Angular, with Mermaid, KaTeX, stream-diffs code blocks, safe HTML
A minimal, distraction-free markdown editor built with Tauri, React, and TypeScript
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Frequently asked questions
How many open source mermaid projects are there?
This registry tracks 6 projects tagged mermaid, with 94,398 GitHub stars between them. The most-adopted is diagram-design at 64,318 stars.
Are these mermaid projects free to use?
Yes — 6 of the 6 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which mermaid project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these mermaid projects still maintained?
5 of the 6 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.