Source: https://seerepo.com/compare/calcom/cal.diy/vs/fosrl/pangolin
Markdown source: https://seerepo.com/compare/calcom/cal.diy/vs/fosrl/pangolin.md
Description: cal.diy and pangolin share 21 technologies: Next.js, Postgres, Redis, Stripe, React, PostHog, lru-cache, helmet, Zod, winston, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, nodemailer, cmdk, and react-day-picker. Both are written in TypeScript.

# cal.diy vs pangolin

cal.diy and pangolin share 21 technologies: Next.js, Postgres, Redis, Stripe, React, PostHog, lru-cache, helmet, Zod, winston, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, nodemailer, cmdk, and react-day-picker. Both are written in TypeScript.

- [calcom/cal.diy](https://seerepo.com/r/calcom/cal.diy): Scheduling infrastructure for absolutely everyone.
- [fosrl/pangolin](https://seerepo.com/r/fosrl/pangolin): Modern networking and security platform providing secure access and connectivity to apps, infrastructure, and AI workloads. Connect and protect your users.

## What they share and what sets them apart

- In common: Next.js, Postgres, Redis, Stripe, React, PostHog, lru-cache, helmet, Zod, winston, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, nodemailer, cmdk, react-day-picker
- Only in cal.diy: connect, @nestjs/core, @nestjs/bull, @nest-lab/throttler-storage-redis, bull, Google, Sentry, NestJS, @next/third-parties, Vercel, @trpc/server, tRPC, kysely, next-auth, class-validator, class-transformer, nest-winston, tslog, winston-transport, classnames, TanStack, sonner, Framer, @formkit/auto-animate, react-select, react-inlinesvg, react-sticky-box, bcryptjs, jose, otplib, markdown-it, node-html-parser, qrcode, react-qr-code, ink, ink-text-input, ink-select-input, ical.js, Base UI, entities, handlebars, dompurify, jimp, remove-markdown, sanitize-html, sharp, turndown, marked, Prisma, node-ical, lexical, react-easy-crop, react-colorful, @lexical/markdown
- Only in pangolin: Express, SQLite, AWS S3, github.com/charmbracelet/lipgloss, @tanstack/react-table, input-otp, @monaco-editor/react, recharts, canvas-confetti, D3, Headless UI, nextjs-toploader, vaul, xterm, @radix-ui/react-icons, react-icons, Drizzle, simplewebauthn, jsonwebtoken, js-yaml, react-email, yaml, qrcode.react, zod-validation-error, winston-daily-rotate-file

## Side by side

| | cal.diy | pangolin |
|---|---|---|
| Size | 554,567 lines written, 4,308 code files | 349,039 lines written, 1,855 code files |
| Who writes it | 6.3% of its commits signed by AI. With Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot | 0.7% of its commits signed by AI. With GitHub Copilot, Claude Code, and Codex |
| Activity | Last push November 3, 2026, 16,069 commits, 49,716 stars | Last push November 4, 2026, 7,511 commits, 23,313 stars |
| Tests | 644 test files. 14.8% of its code files have a test that imports them | 24 test files. 1.1% 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 pangolin?

cal.diy, with 554,567 lines written; pangolin has 349,039.

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 pangolin?

cal.diy, with 49,716 stars; pangolin has 23,313.

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

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

cal.diy, with 644 test files; pangolin has 24.

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 pangolin?

pangolin: its last push was on November 4, 2026, and cal.diy's on November 3, 2026.

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

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

cal.diy: an AI signed 6.3% of its commits, with Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot; in pangolin, 0.7%.

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 5, 2026, at commit 2eb48ec (https://github.com/calcom/cal.diy/tree/2eb48eccd8aca8a0c0ffabf28cf92e298b33ecee)
- fosrl/pangolin: Read on November 4, 2026, at commit aaec7f4 (https://github.com/fosrl/pangolin/tree/aaec7f44c47eee61649e581405154419b8ad6982)

## 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.