Open source repo

What's inside onlook-dev/onlook

onlook-dev/onlook is a TypeScript repo with 151,760 lines written in 1,047 files. onlook is built with Next.js and React and uses Supabase, Postgres, PostHog, and 3 more. AI signed 5% of the 1,620 commits of onlook.

Its description on GitHub: “The Developer Tool for Visual Engineers • An Open-Source AI-First Design tool • Visually build, style, and edit your code with AI • World's best, top-most agent recommended #1 Developer tool for Designers and Visual Engineers to design with Real Code.”

TypeScriptApache-2.027,084

Read on November 2, 2026, at commit 423e2e9.

What the card proved: what it’s built with on the left, what it uses on the right.

See each one with its proof

Its folders

TechnologiesWhat is onlook built with?onlook is built with Next.js and React and uses Supabase, Postgres, PostHog, and 3 more.

Who writes itHow much of onlook did AI write?5%AI signed 5% of the 1,620 commits of onlook.

In figures

lines written: 151,760; The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
files: 1,047; The product’s, not counting tests.
test files: 234; The files that test the code.
technologies: 8; Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

Frequently asked questions

What is onlook-dev/onlook?

onlook-dev/onlook is a TypeScript repo with 151,760 lines written in 1,047 files. Its description on GitHub: “The Developer Tool for Visual Engineers • An Open-Source AI-First Design tool • Visually build, style, and edit your code with AI • World's best, top-most agent recommended #1 Developer tool for Designers and Visual Engineers to design with Real Code.”

The proof: its page on GitHub

What is onlook built with?

onlook is built with Next.js and React and uses Supabase, Postgres, PostHog, and 3 more.

The proof: each service with its file and line

How much of onlook did AI write?

AI signed 5% of the 1,620 commits of onlook.

The proof: the commits each tool signed

What license does onlook have?

onlook is released under the Apache-2.0 license.

The proof: its page on GitHub

How many stars does onlook have on GitHub?

onlook had 27,084 stars on GitHub on November 2, 2026.