Source: https://seerepo.com/compare/calcom/cal.diy/vs/Portkey-AI/gateway
Markdown source: https://seerepo.com/compare/calcom/cal.diy/vs/Portkey-AI/gateway.md
Description: cal.diy and gateway share 9 technologies: Next.js, Redis, React, Zod, Tailwind CSS, class-variance-authority, Radix UI, jose, and tailwind-merge. Both are written in TypeScript.

# cal.diy vs gateway

cal.diy and gateway share 9 technologies: Next.js, Redis, React, Zod, Tailwind CSS, class-variance-authority, Radix UI, jose, and tailwind-merge. Both are written in TypeScript.

- [calcom/cal.diy](https://seerepo.com/r/calcom/cal.diy): Scheduling infrastructure for absolutely everyone.
- [Portkey-AI/gateway](https://seerepo.com/r/Portkey-AI/gateway): A blazing fast AI Gateway with integrated guardrails. Route to 1,600+ LLMs, 50+ AI Guardrails with 1 fast & friendly API.

## What they share and what sets them apart

- In common: Next.js, Redis, React, Zod, Tailwind CSS, class-variance-authority, Radix UI, jose, tailwind-merge
- Only in cal.diy: connect, NestJS, Postgres, @nestjs/bull, @nest-lab/throttler-storage-redis, bull, Google, Sentry, Stripe, @next/third-parties, Vercel, PostHog, @trpc/server, @jetstreamapp/soql-parser-js, tRPC, lru-cache, kysely, next-auth, helmet, class-validator, class-transformer, @axiomhq/winston, nest-winston, tslog, winston, winston-transport, classnames, next-themes, React Hook Form, TanStack, sonner, Framer, @formkit/auto-animate, react-select, @hookform/error-message, react-digit-input, react-inlinesvg, @dub/embed-react, Glide, kbar, react-phone-input-2, react-sticky-box, react-timezone-select, react-turnstile, Lucide, bcryptjs, otplib, mailhog, markdown-it, node-html-parser, qrcode, react-qr-code, @hookform/resolvers, @todesktop/client-core, ink, ink-text-input, ink-select-input, @googleapis/oauth2, ical.js, Base UI, entities, nodemailer, handlebars, @trigger.dev/sdk, @sendgrid/client, dompurify, jimp, remove-markdown, sanitize-html, sharp, turndown, marked, Prisma, node-ical, lexical, react-easy-crop, cmdk, react-colorful, react-day-picker, @lexical/markdown
- Only in gateway: Hono, @smithy/signature-v4, portkey-ai, @cfworker/json-schema, @hono/node-server, ai

## Side by side

| | cal.diy | gateway |
|---|---|---|
| Size | 554,567 lines written, 4,285 code files | 78,769 lines written, 542 code files |
| Who writes it | 6.3% of its commits signed by AI. With Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot | 0.2% of its commits signed by AI. With GitHub Copilot |
| Activity | Last push November 3, 2026, 16,069 commits, 49,876 stars | Last push May 25, 2026, 2,185 commits, 13,355 stars |
| Tests | 644 test files. 14.8% of its code files have a test that imports them | 40 test files. 15.3% 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, cal.diy or gateway?

cal.diy, with 554,567 lines written; gateway has 78,769.

The proof: [calcom/cal.diy's code at commit 2eb48ec](https://github.com/calcom/cal.diy/tree/2eb48eccd8aca8a0c0ffabf28cf92e298b33ecee)

### Which has more GitHub stars, cal.diy or gateway?

cal.diy, with 49,876 stars; gateway has 13,355.

The proof: [calcom/cal.diy on GitHub](https://github.com/calcom/cal.diy)

### Which has more tests, cal.diy or gateway?

cal.diy, with 644 test files; gateway has 40.

The proof: [calcom/cal.diy's code at commit 2eb48ec](https://github.com/calcom/cal.diy/tree/2eb48eccd8aca8a0c0ffabf28cf92e298b33ecee)

### Which was updated more recently, cal.diy or gateway?

cal.diy: its last push was on November 3, 2026, and gateway's on May 25, 2026.

The proof: [calcom/cal.diy's commits on GitHub](https://github.com/calcom/cal.diy/commits)

### Which has more commits signed by AI, cal.diy or gateway?

cal.diy: an AI signed 6.3% of its commits, with Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot; in gateway, 0.2%.

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

## Sources

- calcom/cal.diy: Read on November 10, 2026, at commit 2eb48ec (https://github.com/calcom/cal.diy/tree/2eb48eccd8aca8a0c0ffabf28cf92e298b33ecee)
- Portkey-AI/gateway: Read on November 10, 2026, at commit 669825c (https://github.com/Portkey-AI/gateway/tree/669825cbe89ee51569918b8f78a9db486fd69dd4)

## 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.