nomnoml

Draw UML-style class and component diagrams from a compact text syntax with instant preview.

Artifact by Daniel Kallin

IndexedMIT★ 2,840Charts & diagramsNo sign-up

Open tool ↗

Write a review

Use it

Opens nomnoml.com in a new tab. Nothing to install.

Open nomnoml Source code

You provide: nomnoml text syntax
You get: UML diagram, SVG/PNG export
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Nov 1, 2026

About

nomnoml is an open-source web app in the visualization category (uml). It opens in your browser, so there is nothing to install. You provide nomnoml text syntax and get UML diagram, SVG/PNG export. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (skanaar/nomnoml).

Category: Charts & diagrams · uml

Reviews

Write a review

No reviews yet. Used it? Sign in with an established GitHub account to rate it. How reviews work

More charts & diagrams tools

See all charts & diagrams tools →

Signals

Stars: 2,840

Details

Auth: No auth
License: MIT
Repository: github.com/skanaar/nomnoml
Website: nomnoml.com/
First seen: Oct 31, 2026
Last checked: Nov 1, 2026
Source: GitHub

Cite this page

nomnoml: free online tool. Agent Mart. https://agentmart.dev/artifacts/nomnoml (last updated 2026-11-01)