Diagramming Tools

Generic Collaborative Diagramming Web Interfaces

• Draw.io (free google drive integration)
• Excalidraw (free and payed tier)
• Lucidchart (limited free tier)

Generic Brainstorming and Design Web Interfaced Tools

• Miro (limited free tier)
• Figma (limited free tier)

Diagram as code

• Plantuml (many integrations)
• Mermaid (Can easily be integrated in markdown files of Gitlab, Github, ...)

C4 Model

• Structurizr (lite, on-prem and cloud)
• Archinsight (open-source)
• IcePanel (limited free tier)
• C4-PlantUML (open-source)

Tip: C4 Model Cheat Sheet from IcePanel

Arc42

Arc42 provides a template for documenting and communicating software and system architectures.

• Arc42

Used by publishers

• OmniGraffle (affortable)

System Diagramming

• IcePanel (limited free tier)
• Cloudcraft (limited free tier)

Enterprise

• Archi (open-source)
• Visual Paradigm
• Enterprise Architect (windows-only)