What is openui built with?

Q: Which repos have a stack like openui's?

The ones that share most of its stack: multica-ai/multica, janhq/jan, and infiniflow/ragflow.

openui is a TypeScript repo built with React, Angular, react-native, Svelte, and Vue. It signs people in with openid-client, uses AI through @assistant-ui/react, ai, @ag-ui/core, LangChain, and eve, measures its use with PostHog, makes its content with remark-gfm, remark-breaks, katex, react-markdown, rehype-katex, and 3 more, validates its data with Zod, and is tested with Vitest, @testing-library/svelte, and @vue/test-utils. It has 280,786 written lines, with 155 test files.

Read on November 8, 2026, at commit 5afae00. Read it as markdown

Frontend

The base 5

React597 files
Angular7 files
Vue6 files
Svelte4 files
react-native1 file

Icons 1

Lucide106 files

Interface 9

D354 files
Radix UI46 files
d3-shape20 files
react-day-picker16 files
d3-selection6 files
Inquirer5 files
@floating-ui/react-dom4 files
react-syntax-highlighter4 files
TanStack4 files

Styles 2

goober3 files
Tailwind CSS

Backend

AI 5

@ag-ui/core5 files
@assistant-ui/react4 files
ai4 files
LangChain2 files
eve1 file

Sign-in 1

openid-client2 files

Services 1

PostHog1 file · packages/openui-cli/src/lib/posthog.ts, line 1

Support

Validation 1

Zod182 files

Testing 3

Vitest144 files
@vue/test-utils2 files
@testing-library/svelte1 file

Tools 6

@angular/compiler1 file
esbuild1 file
Vercel1 file
commander8 files
ci-info2 files
get-port1 file

Content 8

@react-email/components34 files
remark-gfm6 files
remark-breaks4 files
rehype-katex2 files
remark-math2 files
katex1 file
react-markdown2 files
unist-util-visit2 files

Other 7

zustand18 files
Lodash6 files
date-fns3 files
.ENV1 file
clsx272 files
open2 files
cross-spawn1 file

Other repos with a similar stack

Ordered by how much of its stack they share with openui, then by stars.

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