🧭 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.

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

Repo Projeto de Software

📏Modelo C4 para documentação de arquiteturas

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

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.

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

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

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

.NET coffee shop application with modular approach

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

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.

A static site for C4 diagrams from a Structurizr workspace

Simplified C4 model yaml editor