Source: https://seerepo.com/compare/cosscom/ui/vs/THU-MAIC/OpenMAIC
Markdown source: https://seerepo.com/compare/cosscom/ui/vs/THU-MAIC/OpenMAIC.md
Description: ui and OpenMAIC share 15 technologies: React, Next.js, Tailwind CSS, class-variance-authority, next-themes, tailwind-merge, Radix UI, sonner, cmdk, react-resizable-panels, Lucide, shiki, Zod, Base UI, and motion. Both are written in TypeScript.

# ui vs OpenMAIC

ui and OpenMAIC share 15 technologies: React, Next.js, Tailwind CSS, class-variance-authority, next-themes, tailwind-merge, Radix UI, sonner, cmdk, react-resizable-panels, Lucide, shiki, Zod, Base UI, and motion. Both are written in TypeScript.

- [cosscom/ui](https://seerepo.com/r/cosscom/ui): coss.com/ui is the official design system of Cal.com
- [THU-MAIC/OpenMAIC](https://seerepo.com/r/THU-MAIC/OpenMAIC): Open Multi-Agent Interactive Classroom — Get an immersive, multi-agent learning experience in just one click

## What they share and what sets them apart

- In common: React, Next.js, Tailwind CSS, class-variance-authority, next-themes, tailwind-merge, Radix UI, sonner, cmdk, react-resizable-panels, Lucide, shiki, Zod, Base UI, motion
- Only in ui: fumadocs-core, react-aria-components, headless-tree, react-day-picker, TanStack, react-payment-inputs, shadcn, dnd-kit, input-otp, emblor, react-aria, use-mask-input, react-phone-number-input, @remixicon/react, hast-util-to-jsx-runtime, @daypicker/react, hugeicons, @shikijs/transformers
- Only in OpenMAIC: Postgres, dexie, @aws-sdk/s3-request-presigner, Anthropic, OpenAI, AWS S3, Hono, PostCSS, postcss-value-parser, @fontsource-variable/inter, fontsource, geist, ProseMirror, xyflow, echarts, use-stick-to-bottom, prosemirror-inputrules, animate.css, embla-carousel-react, monaco-editor, prosemirror-dropcursor, prosemirror-gapcursor, react-colorful, xterm, @aws-sdk/credential-providers, Pi, ai, e2b, ai-sdk, partial-json, tokenlens, katex, streamdown, js-yaml, parse5, sharp, linkedom, parse-srcset, htmlparser2, sanitize-html, @joplin/turndown-plugin-gfm, @mozilla/readability, docx, mdast-util-from-markdown, micromark-extension-math, pdf-lib, remark-cjk-friendly, svg-pathdata, temml, turndown, unpdf, uqr, typebox, entities, @xmldom/xmldom, cfb, jpegxr, mathml-to-latex, omml2mathml, pdfjs-dist, pptxtojson, utif, html-to-image, html2canvas-pro, @hyperframes/producer, @hono/node-server

## Side by side

| | ui | OpenMAIC |
|---|---|---|
| Size | 160,398 lines written, 1,547 code files | 903,423 lines written, 2,113 code files |
| Who writes it | 6.2% of its commits signed by AI. With Devin, Cursor, and Claude Code | 38% of its commits signed by AI. With Claude Code, Cursor, Codex, and GitHub Copilot |
| Activity | Last push November 9, 2026, 1,057 commits, 10,841 stars | Last push November 13, 2026, 880 commits, 43,461 stars |
| Tests | 9 test files. 0.6% of its code files have a test that imports them | 1,627 test files. 62.3% 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, ui or OpenMAIC?

OpenMAIC, with 903,423 lines written; ui has 160,398.

The proof: [THU-MAIC/OpenMAIC's code at commit 65d5ac4](https://github.com/THU-MAIC/OpenMAIC/tree/65d5ac408301a2916d1d7e81b037855760a286ab)

### Which has more GitHub stars, ui or OpenMAIC?

OpenMAIC, with 43,461 stars; ui has 10,841.

The proof: [THU-MAIC/OpenMAIC on GitHub](https://github.com/THU-MAIC/OpenMAIC)

### Which has more tests, ui or OpenMAIC?

OpenMAIC, with 1,627 test files; ui has 9.

The proof: [THU-MAIC/OpenMAIC's code at commit 65d5ac4](https://github.com/THU-MAIC/OpenMAIC/tree/65d5ac408301a2916d1d7e81b037855760a286ab)

### Which was updated more recently, ui or OpenMAIC?

OpenMAIC: its last push was on November 13, 2026, and ui's on November 9, 2026.

The proof: [THU-MAIC/OpenMAIC's commits on GitHub](https://github.com/THU-MAIC/OpenMAIC/commits)

### Which has more commits signed by AI, ui or OpenMAIC?

OpenMAIC: an AI signed 38% of its commits, with Claude Code, Cursor, Codex, and GitHub Copilot; in ui, 6.2%.

The proof: [the commits each tool signed in THU-MAIC/OpenMAIC](https://seerepo.com/r/THU-MAIC/OpenMAIC/ai)

## Sources

- cosscom/ui: Read on November 13, 2026, at commit fe6ffa8 (https://github.com/cosscom/ui/tree/fe6ffa81f434a4afe1c01564c13bb237564c42e2)
- THU-MAIC/OpenMAIC: Read on November 13, 2026, at commit 65d5ac4 (https://github.com/THU-MAIC/OpenMAIC/tree/65d5ac408301a2916d1d7e81b037855760a286ab)

## 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.