Describe a network. Get a diagram you own.
Marrow compiles topology YAML into one interactive HTML file that works offline, embeds anywhere, and belongs to you. You declare structure — the engine computes the layout.
MIT-licensed · no account, no server · the compiler is the whole product.
tier, positioned by nobody# what you get
Everything compiles into the one file.
- output
- Interactive, not a screenshot Pan, zoom, open a device for its interfaces and config, trace a path, search across pages, export to PNG or SVG.
- offline
- Self-contained, works offline Icons, styles and the ~20 KB runtime are inlined — no CDN, no fonts to fetch, no telemetry. Open it on a plane.
- diagnostics
- Errors built for machines A stable code, a line and column, a snippet, a fix hint and did-you-mean suggestions on every one.
- icons
- ~2,850 real vendor icons Cisco, AWS, Azure, GCP, Kubernetes and vendor-neutral packs — searchable, never guessable.
Where to go next
- Showcase — see what the compiler makes, from a trunk to 15k devices.
- Getting started — clone,
npm run setup, first diagram. - Why Marrow — how it differs from draw.io, Mermaid, and
diagrams. - Guides — the practical how-to, one topic at a time.
- Reference — every key, flag, and diagnostic code.
- Decisions — why the tool is shaped the way it is.