Source: https://seerepo.com/r/thesysdev/openui/built Markdown source: https://seerepo.com/r/thesysdev/openui/built.md Description: openui is a TypeScript repo built with React, Angular, react-native, Svelte, and Vue. It signs people in with openid-client. # What is openui built with? 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. Repository: https://github.com/thesysdev/openui ## Frontend (packages/a2ui) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/a2ui) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ### Testing - **Vitest**: 4 files ## Frontend (packages/angular-lang) ### The base - **[Angular](https://seerepo.com/uses/angular)**: 7 files ## Support (packages/angular-lang) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 10 files ### Tools - **@angular/compiler**: 1 file ## Frontend (packages/assistant-ui) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Backend (packages/assistant-ui) ### AI - **[@assistant-ui/react](https://seerepo.com/uses/assistant-ui-react)**: 4 files - **[ai](https://seerepo.com/uses/ai)**: 1 file ## Support (packages/assistant-ui) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 4 files ## Frontend (packages/browser-bundle) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Frontend (packages/devtools) ### The base - **[React](https://seerepo.com/uses/react)**: 33 files ### Icons - **[Lucide](https://seerepo.com/uses/lucide)**: 17 files ## Support (packages/devtools) ### Testing - **Vitest**: 2 files ## Support (packages/lang-core) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 5 files ### Testing - **Vitest**: 16 files ### Tools - **ci-info**: 2 files ## Backend (packages/langchain) ### AI - **@ag-ui/core**: 3 files - **[LangChain](https://seerepo.com/uses/langchain)**: 1 file ## Support (packages/langchain) ### Testing - **Vitest**: 4 files ## Frontend (packages/libraries/dashboard) ### The base - **[React](https://seerepo.com/uses/react)**: 19 files ### Icons - **[Lucide](https://seerepo.com/uses/lucide)**: 3 files ## Support (packages/libraries/dashboard) ### Content - **[remark-gfm](https://seerepo.com/uses/remark-gfm)**: 2 files ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 40 files ### Other - **clsx**: 14 files ## Support (packages/observability-cloud) ### Testing - **Vitest**: 10 files ## Support (packages/observability) ### Testing - **Vitest**: 1 file ## Frontend (packages/openui-cli) ### Interface - **[Inquirer](https://seerepo.com/uses/inquirer)**: 5 files ## Backend (packages/openui-cli) ### Sign-in - **[openid-client](https://seerepo.com/uses/openid-client)**: 2 files ### Services - **[PostHog](https://seerepo.com/uses/posthog)**: 1 file · [packages/openui-cli/src/lib/posthog.ts, line 1](https://github.com/thesysdev/openui/blob/5afae00a507e7a96144ca39e446f9af86e5f779c/packages/openui-cli/src/lib/posthog.ts#L1) ## Support (packages/openui-cli) ### Tools - **commander**: 8 files - **esbuild**: 1 file - **get-port**: 1 file - **[Vercel](https://seerepo.com/uses/vercel)**: 1 file ### Other - **open**: 2 files - **.ENV**: 1 file - **cross-spawn**: 1 file ## Frontend (packages/react-components) ### The base - **[React](https://seerepo.com/uses/react)**: 206 files ### Styles - **goober**: 1 file ### Interface - **[D3](https://seerepo.com/uses/d3)**: 27 files - **[Radix UI](https://seerepo.com/uses/radix-ui)**: 18 files - **d3-shape**: 10 files - **[react-day-picker](https://seerepo.com/uses/react-day-picker)**: 7 files - **d3-selection**: 3 files - **@floating-ui/react-dom**: 2 files - **[react-syntax-highlighter](https://seerepo.com/uses/react-syntax-highlighter)**: 2 files - **[TanStack](https://seerepo.com/uses/tanstack)**: 2 files ### Icons - **[Lucide](https://seerepo.com/uses/lucide)**: 26 files ## Support (packages/react-components) ### Content - **[remark-breaks](https://seerepo.com/uses/remark-breaks)**: 2 files - **[remark-gfm](https://seerepo.com/uses/remark-gfm)**: 2 files - **[katex](https://seerepo.com/uses/katex)**: 1 file - **[react-markdown](https://seerepo.com/uses/react-markdown)**: 1 file - **[rehype-katex](https://seerepo.com/uses/rehype-katex)**: 1 file - **[remark-math](https://seerepo.com/uses/remark-math)**: 1 file - **[unist-util-visit](https://seerepo.com/uses/unist-util-visit)**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ### Other - **clsx**: 129 files - **Lodash**: 2 files - **zustand**: 2 files - **date-fns**: 1 file ## Support (packages/react-email) ### Content - **@react-email/components**: 34 files ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 45 files ## Frontend (packages/react-headless) ### The base - **[React](https://seerepo.com/uses/react)**: 20 files ## Backend (packages/react-headless) ### AI - **@ag-ui/core**: 2 files - **[ai](https://seerepo.com/uses/ai)**: 2 files - **eve**: 1 file ## Support (packages/react-headless) ### Testing - **Vitest**: 23 files ### Other - **zustand**: 12 files ## Frontend (packages/react-lang) ### The base - **[React](https://seerepo.com/uses/react)**: 11 files - **[react-native](https://seerepo.com/uses/react-native)**: 1 file ## Support (packages/react-lang) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 2 files ### Testing - **Vitest**: 14 files ## Frontend (packages/react-ui) ### The base - **[React](https://seerepo.com/uses/react)**: 305 files ### Styles - **[Tailwind CSS](https://seerepo.com/uses/tailwind-css)** - **goober**: 2 files ### Interface - **[Radix UI](https://seerepo.com/uses/radix-ui)**: 28 files - **[D3](https://seerepo.com/uses/d3)**: 27 files - **d3-shape**: 10 files - **[react-day-picker](https://seerepo.com/uses/react-day-picker)**: 9 files - **d3-selection**: 3 files - **@floating-ui/react-dom**: 2 files - **[react-syntax-highlighter](https://seerepo.com/uses/react-syntax-highlighter)**: 2 files - **[TanStack](https://seerepo.com/uses/tanstack)**: 2 files ### Icons - **[Lucide](https://seerepo.com/uses/lucide)**: 60 files ## Support (packages/react-ui) ### Content - **[remark-breaks](https://seerepo.com/uses/remark-breaks)**: 2 files - **[remark-gfm](https://seerepo.com/uses/remark-gfm)**: 2 files - **[react-markdown](https://seerepo.com/uses/react-markdown)**: 1 file - **[rehype-katex](https://seerepo.com/uses/rehype-katex)**: 1 file - **[remark-math](https://seerepo.com/uses/remark-math)**: 1 file - **[unist-util-visit](https://seerepo.com/uses/unist-util-visit)**: 1 file ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 82 files ### Testing - **Vitest**: 47 files ### Other - **clsx**: 129 files - **Lodash**: 4 files - **zustand**: 4 files - **date-fns**: 2 files ## Backend (packages/server) ### AI - **[ai](https://seerepo.com/uses/ai)**: 1 file - **[LangChain](https://seerepo.com/uses/langchain)**: 1 file ## Support (packages/server) ### Testing - **Vitest**: 2 files ## Frontend (packages/svelte-lang) ### The base - **[Svelte](https://seerepo.com/uses/svelte)**: 4 files ## Support (packages/svelte-lang) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 3 files - **@testing-library/svelte**: 1 file ## Frontend (packages/vue-lang) ### The base - **[Vue](https://seerepo.com/uses/vue)**: 6 files ## Support (packages/vue-lang) ### Validation - **[Zod](https://seerepo.com/uses/zod)**: 1 file ### Testing - **Vitest**: 4 files - **@vue/test-utils**: 2 files ## Other repos with a similar stack - [multica-ai/multica](https://seerepo.com/r/multica-ai/multica/built): React, PostHog, react-native, Zod, remark-gfm, react-day-picker, TanStack, remark-breaks, katex, react-markdown, rehype-katex, remark-math, unist-util-visit, Tailwind CSS · [Compare](https://seerepo.com/compare/multica-ai/multica/vs/thesysdev/openui) - [janhq/jan](https://seerepo.com/r/janhq/jan/built): React, PostHog, Zod, ai, Lucide, remark-gfm, Radix UI, TanStack, katex, react-markdown, rehype-katex, remark-math, unist-util-visit, Tailwind CSS · [Compare](https://seerepo.com/compare/janhq/jan/vs/thesysdev/openui) - [infiniflow/ragflow](https://seerepo.com/r/infiniflow/ragflow/built): React, Zod, Lucide, remark-gfm, D3, Radix UI, react-day-picker, react-syntax-highlighter, remark-breaks, react-markdown, rehype-katex, remark-math, Tailwind CSS · [Compare](https://seerepo.com/compare/infiniflow/ragflow/vs/thesysdev/openui) - [aaif-goose/goose](https://seerepo.com/r/aaif-goose/goose/built): React, Zod, Lucide, remark-gfm, Radix UI, react-syntax-highlighter, TanStack, remark-breaks, katex, react-markdown, rehype-katex, remark-math, Tailwind CSS · [Compare](https://seerepo.com/compare/aaif-goose/goose/vs/thesysdev/openui) - [chatboxai/chatbox](https://seerepo.com/r/chatboxai/chatbox/built): React, Zod, ai, Lucide, remark-gfm, Radix UI, TanStack, remark-breaks, react-markdown, rehype-katex, remark-math, unist-util-visit, Tailwind CSS · [Compare](https://seerepo.com/compare/chatboxai/chatbox/vs/thesysdev/openui) - [Significant-Gravitas/AutoGPT](https://seerepo.com/r/Significant-Gravitas/AutoGPT/built): React, PostHog, Zod, ai, remark-gfm, Radix UI, react-day-picker, katex, react-markdown, rehype-katex, remark-math, Tailwind CSS · [Compare](https://seerepo.com/compare/Significant-Gravitas/AutoGPT/vs/thesysdev/openui) ## Frequently asked questions ### What language is openui written in? openui is written in TypeScript, with 280,786 written lines. ### What framework does openui use? openui is built with React, Angular, react-native, Svelte, and Vue. ### What does openui sign people in with? openui signs people in with openid-client. ### Does openui use AI? Yes. openui uses AI through @assistant-ui/react, ai, @ag-ui/core, LangChain, and eve. ### What services does openui use? openui measures its use with PostHog. The proof: [packages/openui-cli/src/lib/posthog.ts, line 1](https://github.com/thesysdev/openui/blob/5afae00a507e7a96144ca39e446f9af86e5f779c/packages/openui-cli/src/lib/posthog.ts#L1) ### Does openui have tests? Yes. openui has 155 test files and is tested with Vitest, @testing-library/svelte, and @vue/test-utils. ### Which repos have a stack like openui's? The ones that share most of its stack: multica-ai/multica, janhq/jan, and infiniflow/ragflow. ## What is your repo built with? Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.