penrose/penrose

Health v2 · maintenance only

Adoption not part of the score

7969 stars · 359 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Penrose is a platform and TypeScript library for creating mathematical and technical diagrams declaratively by writing plain-text notation in three programs (Domain, Substance, Style). It converts these specifications into an optimization problem solved with symbolic differentiation to automatically lay out high-quality SVG diagrams.

Use cases

• create mathematical diagrams from plain text notation
• visualize set theory relationships like subsets and intersections
• generate publication-quality technical illustrations declaratively
• build interactive diagrams in the browser with JavaScript
• separate diagram content from visual styling
• teach mathematical concepts with auto-generated visuals

When to choose

• you want declarative, reusable diagram specifications instead of dragging shapes
• you need diagrams of mathematical or technical concepts with automatic layout
• you want to separate diagram content from visual representation
• you need programmatically generated or interactive diagrams in web apps

When to avoid

• you need free-form general-purpose drawing like flowcharts or UI mockups
• you require pixel-perfect manual control over shape placement
• you need a simple drag-and-drop diagramming tool for non-programmers
• your diagrams are outside Penrose's supported domains and you can't write a Style program

Facets

library · maturity active

data-visualization programming-language graphics interpreter data-visualization mathematics education programming-languages browser cross-platform diagramming domain-specific-language declarative-diagrams svg constraint-solver typescript nodejs web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="penrose/penrose")