c4-model

From text & real sources to maintainable .drawio architecture models: Diagram IR with source-kind profiles, incremental sync preserving manual layout, multi-view projection, architecture-as-test with a CI action, query/review, what-if, accessible Story Mode, and a built-in MCP server

🧭 Architecture-first system design: 26 bilingual tutorials, 25 architecture templates, and 6 end-to-end cases covering distributed systems, AI-native systems, RAG, coding Agents, and production trade-offs.

Structurizr Lite

Architecture as Code (AaC) framework that lets you describe Architecture Model once and then generates many diagrams. Inspired by C4 Model

Structurizr on-premises installation

Monorepo containing Keadex applications and libraries.

This example shows how you can use arc42 in combination with the C4 model and the Documentation as Code technique.

Repo Projeto de Software

pumla - systematic re-use of model elements described with PlantUML

Model-driven development for coding agents. Plan changes in a shared responsibility model mapped to your code; your agent reads, modifies, and implements it through a built-in MCP server.

📏Modelo C4 para documentação de arquiteturas

Collection of OpenSpec Custom Schema for Workflows other than standard spec-driven schema that is included in OpenSpec.

Software architecture documentation example that uses arc42 and C4 Model with AsciiDoc

Simplicity in Code, Power in Design

A Python 3 port of Simon Brown's Structurizr diagrams-as-code architecture description tool.

Claude Code skill to create a C4 model based on an existing code base

archifacts is a library to extract your architectural concepts out of your application's code

.NET coffee shop application with modular approach

Local-first C4 architecture diagrams in your browser. Edit visually, save as plain .dsl files. Structurizr DSL compatible, no signup, no server.

Interactive Claude Code skill for C4 architecture diagrams (Simon Brown's model) — mode-driven workflow with Mermaid / Structurizr / PlantUML output and filesystem or MCP (Notion / Linear / Drive) destinations.