Design, don't code
Draw shapes and describe your model in simple visual editors. metaforge handles the rest.
Your notation, your editor — generated
Design a language once.
Ship a diagram editor.
metaforge turns a declarative language definition into a real, installable diagram editor. Draw your shapes, describe your model, press generate — and get a working VS Code editor your whole team can use. No hand-written editor code.
Built on Eclipse GLSP · runs in VS Code · exports clean SVG
The idea
Modeling tools shouldn't be built by hand
Every custom diagram language usually means months of editor code. metaforge flips that: your notation is data, and one smart engine brings it to life. Change a shape, rename a concept, add a relation — your editor updates. No render code to maintain, ever.
Generate instantly
One command produces a standalone editor you can install and share — nothing left to wire up.
Evolve freely
Your language grows as data. Add types and relations without touching a line of editor code.
What you get
A complete editor, not a prototype
A full-featured editor
Create, rename, move, connect, and delete — with typed property editing (dropdowns for enums, toggles for booleans) and real containment. It behaves the way your users expect, because the rules come straight from your model.
Installable & standalone
Generate a self-contained VS Code extension, packaged and ready to install. It carries everything it needs — hand it to a colleague and it just runs.
Beautiful SVG export
The exact same diagram renders to clean, static SVG — perfect for documentation, CI pipelines, and embedding in Markdown. One source, pixel-for-pixel consistent.
Your notation, faithfully
Custom shapes with precise geometry, styled edges, labels, compartments, and nesting. If you can draw it, metaforge can render it — live and on export.
How it works
Three steps from idea to editor
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1
Describe your language
Define your element types, properties, and relationships — the concepts your diagrams are made of.
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2
Draw your notation
Author shapes and edge styles visually, then bind each concept to how it should look.
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3
Generate & ship
Press generate. Out comes a real, installable editor — plus SVG export for free.
Under the hood, your notation stays pure data and one interpreting engine renders it — so the live editor and the exported SVG always agree, and your language never rots into unmaintainable code.
One source, many outputs
Define it once, use it everywhere
Your language definition
model · shapes · binding
▸ A live, interactive editor
▸ Clean SVG export
▸ Diagrams embedded in Markdown
▸ Code & artifact generation
Who it's for
Made for language designers
Teams with a domain language
You have a modeling notation and want a polished editor for it — without staffing a tools team.
Tool & platform builders
You ship several diagram types and are tired of rebuilding the same editor plumbing each time.
Modeling & MDE practitioners
You live in EMF / Sirius / GLSP territory and want a TypeScript-first, VS Code-native path.
Turn your notation into a tool.
metaforge is in active development. Explore the project, try the authoring editors, and generate your first language.