Source: https://seerepo.com/compare/janhq/jan/vs/thesysdev/openui
Markdown source: https://seerepo.com/compare/janhq/jan/vs/thesysdev/openui.md
Description: jan and openui share 14 technologies: React, TanStack, PostHog, Tailwind CSS, Radix UI, Lucide, ai, react-markdown, unist-util-visit, katex, rehype-katex, remark-gfm, remark-math, and Zod. jan is written in Rust and openui in TypeScript.

# jan vs openui

jan and openui share 14 technologies: React, TanStack, PostHog, Tailwind CSS, Radix UI, Lucide, ai, react-markdown, unist-util-visit, katex, rehype-katex, remark-gfm, remark-math, and Zod. jan is written in Rust and openui in TypeScript.

- [janhq/jan](https://seerepo.com/r/janhq/jan): Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.
- [thesysdev/openui](https://seerepo.com/r/thesysdev/openui): The Open Standard for Generative UI

## What they share and what sets them apart

- In common: React, TanStack, PostHog, Tailwind CSS, Radix UI, Lucide, ai, react-markdown, unist-util-visit, katex, rehype-katex, remark-gfm, remark-math, Zod
- Only in jan: Tauri, Hummingbird, sqlx-sqlite, tauri-plugin-store, SQLite, sqlx, Tokio, @tauri-apps/api, gio, glib, objc2-app-kit, objc2-foundation, rusqlite, Vite, @tauri-apps/plugin-store, OpenAI, comfy-table, indicatif, tauri-plugin-dialog, Ratatui, console, gtk, rfd, ed25519-dalek, hmac, keyring, oauth2, rmcp, agent-client-protocol, opencv-python, png, pulldown-cmark, zip, schemars, log, env_logger, psutil, tauri-plugin-log, cairo-rs, objc2-web-kit, webkit2gtk, webview2-com, ash, calamine, csv, html2text, infer, pdf-extract, quick-xml, class-variance-authority, tailwind-merge, sonner, motion, @streamdown/code, @tanstack/react-virtual, dnd-kit, emoji-picker-react, Framer, react-textarea-autosize, use-stick-to-bottom, vaul, @tabler/icons-react, ai-sdk, streamdown, shiki, tauri-apps
- Only in openui: Angular, react-native, Svelte, Vue, @assistant-ui/react, @ag-ui/core, LangChain, Inquirer, openid-client, goober, D3, d3-shape, react-day-picker, d3-selection, @floating-ui/react-dom, react-syntax-highlighter, remark-breaks, @react-email/components, eve

## Side by side

| | jan | openui |
|---|---|---|
| Size | 478,180 lines written, 949 code files | 280,786 lines written, 2,122 code files |
| Who writes it | 0.5% of its commits signed by AI. With GitHub Copilot, Claude Code, Cursor, Factory, Jules, and Aider | 20.6% of its commits signed by AI. With Claude Code, Devin, Cursor, and GitHub Copilot |
| Activity | Last push November 5, 2026, 7,455 commits, 45,500 stars | Last push November 8, 2026, 1,092 commits, 14,963 stars |
| Tests | 527 test files. 48.9% of its code files have a test that imports them | 155 test files. 7.4% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, jan or openui?

jan, with 478,180 lines written; openui has 280,786.

The proof: [janhq/jan's code at commit 879e6ae](https://github.com/janhq/jan/tree/879e6ae9cca4a38673fdb4093349a327e17ccbb1)

### Which has more GitHub stars, jan or openui?

jan, with 45,500 stars; openui has 14,963.

The proof: [janhq/jan on GitHub](https://github.com/janhq/jan)

### Which has more tests, jan or openui?

jan, with 527 test files; openui has 155.

The proof: [janhq/jan's code at commit 879e6ae](https://github.com/janhq/jan/tree/879e6ae9cca4a38673fdb4093349a327e17ccbb1)

### Which was updated more recently, jan or openui?

openui: its last push was on November 8, 2026, and jan's on November 5, 2026.

The proof: [thesysdev/openui's commits on GitHub](https://github.com/thesysdev/openui/commits)

### Which has more commits signed by AI, jan or openui?

openui: an AI signed 20.6% of its commits, with Claude Code, Devin, Cursor, and GitHub Copilot; in jan, 0.5%.

The proof: [the commits each tool signed in thesysdev/openui](https://seerepo.com/r/thesysdev/openui/ai)

## Sources

- janhq/jan: Read on November 6, 2026, at commit 879e6ae (https://github.com/janhq/jan/tree/879e6ae9cca4a38673fdb4093349a327e17ccbb1)
- thesysdev/openui: Read on November 8, 2026, at commit 5afae00 (https://github.com/thesysdev/openui/tree/5afae00a507e7a96144ca39e446f9af86e5f779c)

## 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.