C4 model tool
Document software architecture the C4 way - system context, container, component, and code - with consistent notation across all four levels. Describe your system and AI drafts the diagram.
Step by step
Launch Atlas Diagram Studio and choose a C4 level to start - context, container, component, or code.
Add people, software systems, containers, and components with clear labels and relationships, keeping notation consistent across levels.
Describe your architecture in plain English and AI produces an editable C4 diagram you can refine.
Review the architecture with your team in real time and export to PNG, SVG, or PDF for the RFC or wiki.
Why Atlas Diagram Studio
Most online diagram tools are throwaway. This one has an AI engine, real-time collaboration, and lives inside the workspace where the rest of your work already is.
Describe your C4 diagram in plain English - or paste Mermaid - and Atlas generates an editable, validated diagram you can refine, instead of starting from a blank canvas.
Invite your team and build the C4 diagram together with live cursors, comments, and version history - nobody emails a screenshot back and forth.
Unlike a one-off c4 diagram tool, this lives inside Atlas - so the diagram attaches to the project, task, or doc it describes and is searchable alongside the rest of your work.
FAQ
Ready when you are
Atlas Diagram Studio makes every diagram - flowcharts, UML, ERDs, architecture, mind maps - with AI text-to-diagram and real-time collaboration, inside an all-in-one workspace. Start free.