Source: https://seerepo.com/compare/multica-ai/multica/vs/resend/react-email
Markdown source: https://seerepo.com/compare/multica-ai/multica/vs/resend/react-email.md
Description: multica and react-email share 11 technologies: Redis, Resend, React, Next.js, Tailwind CSS, sonner, tailwind-merge, marked, Zod, PostCSS, and tiptap. multica is written in Go and react-email in TypeScript.

# multica vs react-email

multica and react-email share 11 technologies: Redis, Resend, React, Next.js, Tailwind CSS, sonner, tailwind-merge, marked, Zod, PostCSS, and tiptap. multica is written in Go and react-email in TypeScript.

- [multica-ai/multica](https://seerepo.com/r/multica-ai/multica): Make humans and AI agents work as one team — open-source and self-hostable.
- [resend/react-email](https://seerepo.com/r/resend/react-email): 💌 Build and send emails using React

## What they share and what sets them apart

- In common: Redis, Resend, React, Next.js, Tailwind CSS, sonner, tailwind-merge, marked, Zod, PostCSS, tiptap
- Only in multica: net/http, chi, go-redis, pgx, s3, Postgres, OpenAI, react-router-dom, Electron, @electron-toolkit/preload, react-native, Expo, expo-secure-store, fumadocs-core, PostHog, github.com/golang-jwt/jwt/v5, github.com/aws/aws-sdk-go-v2/credentials, github.com/yuin/goldmark, github.com/tdewolff/parse/v2, Prometheus, github.com/prometheus/client_model, github.com/aws/aws-sdk-go-v2, github.com/aws/aws-sdk-go-v2/config, github.com/lmittmann/tint, gopkg.in/natefinch/lumberjack.v2, fontsource-variable, dnd-kit, motion, class-variance-authority, @shikijs/themes, react-native-safe-area-context, react-native-svg, expo-image, react-native-reanimated, react-native-gesture-handler, react-native-keyboard-controller, Shopify, @react-native-community/datetimepicker, expo-status-bar, react-native-enriched-markdown, @expo/vector-icons, expo-image-picker, expo-document-picker, @shikijs/core, @tailwindcss/postcss, yaml, next-themes, Base UI, TanStack, @number-flow/react, cmdk, emoji-mart, input-otp, react-day-picker, react-resizable-panels, recharts, react-markdown, rehype-sanitize, katex, linkify-it, mdast-util-from-markdown, rehype-katex, rehype-raw, remark-breaks, remark-gfm, remark-math, shiki, react-virtuoso, @floating-ui/dom, lowlight, Mermaid, react-easy-crop, hast-util-to-html, react-qr-code, @tiptap/markdown, mdast-util-gfm-table, mdast-util-math, micromark-extension-gfm-table, micromark-extension-math, remark-cjk-friendly, unist-util-visit
- Only in react-email: classnames, Radix UI, Framer, react-three, three, prism-react-renderer, vaul, Lucide, vercel, ora, @floating-ui/react-dom, hast-util-from-html, prismjs, prompts, picospinner, html-to-text, entities, html5parser, @lottiefiles/dotlottie-react, node-html-parser

## Side by side

| | multica | react-email |
|---|---|---|
| Size | 1,429,010 lines written, 2,695 code files | 209,349 lines written, 931 code files |
| Who writes it | 35.7% of its commits signed by AI. With Claude Code, Cursor, Codex, and GitHub Copilot | 3.3% of its commits signed by AI. With Cursor, Claude Code, and GitHub Copilot |
| Activity | Last push November 5, 2026, 5,414 commits, 55,017 stars | Last push November 5, 2026, 2,625 commits, 19,913 stars |
| Tests | 2,450 test files. 63.7% of its code files have a test that imports them | 194 test files. 18.3% 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, multica or react-email?

multica, with 1,429,010 lines written; react-email has 209,349.

The proof: [multica-ai/multica's code at commit 98846ce](https://github.com/multica-ai/multica/tree/98846ce564a6a7a0d26cb4f071263700003d3041)

### Which has more GitHub stars, multica or react-email?

multica, with 55,017 stars; react-email has 19,913.

The proof: [multica-ai/multica on GitHub](https://github.com/multica-ai/multica)

### Which has more tests, multica or react-email?

multica, with 2,450 test files; react-email has 194.

The proof: [multica-ai/multica's code at commit 98846ce](https://github.com/multica-ai/multica/tree/98846ce564a6a7a0d26cb4f071263700003d3041)

### Which was updated more recently, multica or react-email?

Both got their last push on November 5, 2026.

The proof: [resend/react-email's commits on GitHub](https://github.com/resend/react-email/commits)

### Which has more commits signed by AI, multica or react-email?

multica: an AI signed 35.7% of its commits, with Claude Code, Cursor, Codex, and GitHub Copilot; in react-email, 3.3%.

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

## Sources

- multica-ai/multica: Read on November 5, 2026, at commit 98846ce (https://github.com/multica-ai/multica/tree/98846ce564a6a7a0d26cb4f071263700003d3041)
- resend/react-email: Read on November 5, 2026, at commit d8a0778 (https://github.com/resend/react-email/tree/d8a077865793516917f42993a1e13becd797cad1)

## 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.