Mermaid GitHub Repositories (2026) · Open Source Tools

Turn any idea, plan, or codebase into a beautiful interactive diagram. An agent skill for Claude Code, Codex, and more.

Visualize any GitHub codebase: free interactive architecture diagrams and one-minute explainer videos. Replace 'hub' with 'diagram' in any GitHub URL.

Architecture diagrams and checkable docs from your codebase — ERD, C4, API and lifecycle — generated from Prisma, OpenAPI or GraphQL. One HTML file, no server.

Colorful, themeable Claude Code replies: tables, code, diagrams, charts and tool rows in 15 themes, with copy buttons. A Claude Code mod.

Markdown Preview Enhanced for macOS QuickLook

Creates diagrams from textual descriptions!

⛷ A light, native Markdown notebook for Mac, iPhone and iPad.

MarkMello is an app for quickly opening and reading Markdown files, with an optional edit mode.

A Markdown Editor That Lives in Your Browser, Desktop, and a Single URL. Fast GitHub-style Markdown editing with live preview, diagrams, LaTeX, syntax highlighting, PDF export, and multi-tab support across web, desktop, and Docker.

Lightning-fast native macOS Markdown viewer. Opens .md files instantly: live preview with your editor, GitHub alerts, LaTeX math, Mermaid diagrams, themes and fonts, reading mode, vector PDF export, per-window zoom. SwiftUI + AppKit, zero dependencies. Free on the Mac App Store and Homebrew.

A view for display markdown text.support markdown streaming like gpt&claude&gemini&deepseek

Command line tool for the Mermaid library

RokoAI arch-diagram: a Claude Code & Codex skill that turns any repo or article into an animated architecture diagram (HTML / PNG / MP4 / GIF / Mermaid) with a live trace log

Angular markdown component/directive/pipe/service to parse static, dynamic or remote content to HTML with syntax highlight and more...

Mermaid.js, but headless, in Rust.

A live database structure viewer for Laravel that renders your schema as a scrollable, zoomable ER diagram. Structure only, never data.

A framework for parsing and transforming Markdown written in Swift 6. The syntax is based on the CommonMark specification. The framework defines an abstract syntax for Markdown, provides parsers for parsing strings into abstract syntax trees, and comes with generators for HTML, attributed strings, plain text, and text with ANSI-markup.

Generate Mermaid ERD from your Ruby on Rails application.

Asciidoctor.js extension to convert diagrams to images using Kroki!

Generic graph data structures and algorithms for Go (Golang): dependency graphs (DAGs) with cycle checks and topological sort, BFS and DFS traversal, Dijkstra and other shortest paths, connectivity and partitioning. No dependencies.