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

Editorial diagram design for Claude Code, Codex, GitHub Copilot, Cursor, Factory Droid, Qoder, and Pi. 45 diagram types. 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.

Free, simple, and intuitive online database diagram editor and SQL generator.

CanvasAnvil is an open source AI diagram maker and flowchart generator - an infinite-canvas diagram editor and self-hosted drawio alternative that writes editable .drawio files. Text to diagram, then fix nodes, layout and labels in place. Also AI presentations, interior design CAD/BOM, posters and infographics.

:art: Diagram as Code for prototyping cloud system architectures

Live Quil UML class-diagram viewer driven by EDN

Succinct Compositional Program Graph (SCPG) static analysis engine & 14-diagram UML generator in Rust.

Renders an r/homelab-style network diagram from a YAML inventory (Python → SVG/PNG). Written with Claude.

:left_right_arrow: Asciidoctor diagram extension, with support for AsciiToSVG, BlockDiag (BlockDiag, SeqDiag, ActDiag, NwDiag), Ditaa, Erd, GraphViz, Mermaid, Msc, PlantUML, Shaape, SvgBob, Syntrax, UMLet, Vega, Vega-Lite and WaveDrom.

This is a generator to create a class-diagram of PlantUML from the C# source code.

VoronoiView is a view (ViewGroup) that allows you to add and display views inside Voronoi diagram regions.

Adds Mermaid diagram and flowchart support to VS Code's builtin markdown preview

CLI app to convert ASCII arts into hand drawn diagrams.

Encapsulates the official Jisho.org API and also provides kanji, example, and stroke diagram search.

Interactive React Lifecycle Methods diagram.

TextUSM is a web-based diagram editor that generates diagrams from indented text

Customizable automatic UML diagram generator for C++ based on Clang.

D2 is a modern diagram scripting language that turns text to diagrams.

A Python native dynamical system simulation framework in the block diagram paradigm.

Diagrams as code in Neovim.

Official implementation of paper "On the Diagram of Thought" (https://arxiv.org/abs/2409.10038)

Weave.js is an open source library to build real-time collaboration applications like whiteboards, diagram editors, etc. on HTML5 Canvas with your own UI

【在线免费使用】 简单快速将SQL或DBML转换为美观的ER图（支持 Agent Skill）/ The best SQL to ER Diagram converter (Support Agent Skill).

A 100-day challenge exploring IoT and embedded systems using ESP32, ESP8266, and Raspberry Pi Pico with MicroPython. Each day covers a new sensor or module with complete code, circuit diagram, and explanation.

USPTO patent creation system with MCP server + Claude Code plugin. Hybrid RAG search over MPEP/USC/CFR, BigQuery access to 76M+ patents, automated 35 USC 112 compliance checks, prior art search, diagram generation. GPU-accelerated with skills and autonomous agents.

Generate network topology diagrams from YAML (diagram as code). SVG/HTML output. NetBox integration.

Free, open-source diagram canvas. Draw it, write it as code (Mermaid, D2, Structurizr in), ask any AI model or a local one, let Claude Code edit it live over MCP, or map a GitHub repo with every arrow cited to a file and line. MIT, local-first, no account.

Skill to give Claude Code (and any coding agent) the ability to generate beautiful and practical Excalidraw diagrams.

Self-hosted homelab infrastructure visualizer — interactive network diagram with live status monitoring