Source: https://seerepo.com/compare/calcom/cal.diy/vs/Open-Dev-Society/OpenStock
Markdown source: https://seerepo.com/compare/calcom/cal.diy/vs/Open-Dev-Society/OpenStock.md
Description: cal.diy and OpenStock share 12 technologies: Next.js, React, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, sonner, Radix UI, Lucide, tailwind-merge, nodemailer, and cmdk. Both are written in TypeScript.

# cal.diy vs OpenStock

cal.diy and OpenStock share 12 technologies: Next.js, React, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, sonner, Radix UI, Lucide, tailwind-merge, nodemailer, and cmdk. Both are written in TypeScript.

- [calcom/cal.diy](https://seerepo.com/r/calcom/cal.diy): Scheduling infrastructure for absolutely everyone.
- [Open-Dev-Society/OpenStock](https://seerepo.com/r/Open-Dev-Society/OpenStock): OpenStock is an open-source alternative to expensive market platforms. Track real-time prices, set personalized alerts, and explore detailed company insights — built openly, for everyone, forever free.

## What they share and what sets them apart

- In common: Next.js, React, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, sonner, Radix UI, Lucide, tailwind-merge, nodemailer, cmdk
- Only in cal.diy: connect, @nestjs/core, Postgres, @nestjs/bull, @nest-lab/throttler-storage-redis, bull, Redis, Google, Sentry, Stripe, NestJS, @next/third-parties, Vercel, PostHog, @trpc/server, tRPC, lru-cache, kysely, next-auth, helmet, class-validator, class-transformer, Zod, nest-winston, tslog, winston, winston-transport, classnames, TanStack, Framer, @formkit/auto-animate, react-select, react-inlinesvg, react-sticky-box, bcryptjs, jose, otplib, markdown-it, node-html-parser, qrcode, react-qr-code, @hookform/resolvers, 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, react-day-picker, @lexical/markdown
- Only in OpenStock: MongoDB, react-tweet, Better Auth

## Side by side

| | cal.diy | OpenStock |
|---|---|---|
| Size | 554,567 lines written, 4,308 code files | 14,928 lines written, 126 code files |
| Who writes it | 6.3% of its commits signed by AI. With Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot | 45.8% of its commits signed by AI. With Claude Code, CodeRabbit, Cursor, and Codex |
| Activity | Last push November 3, 2026, 16,069 commits, 49,716 stars | Last push November 4, 2026, 168 commits, 21,129 stars |
| Tests | 644 test files. 14.8% of its code files have a test that imports them | 11 test files. 13.5% 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 OpenStock?

cal.diy, with 554,567 lines written; OpenStock has 14,928.

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 OpenStock?

cal.diy, with 49,716 stars; OpenStock has 21,129.

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

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

cal.diy, with 644 test files; OpenStock has 11.

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 OpenStock?

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

The proof: [Open-Dev-Society/OpenStock's commits on GitHub](https://github.com/Open-Dev-Society/OpenStock/commits)

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

OpenStock: an AI signed 45.8% of its commits, with Claude Code, CodeRabbit, Cursor, and Codex; in cal.diy, 6.3%.

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

## Sources

- calcom/cal.diy: Read on November 5, 2026, at commit 2eb48ec (https://github.com/calcom/cal.diy/tree/2eb48eccd8aca8a0c0ffabf28cf92e298b33ecee)
- Open-Dev-Society/OpenStock: Read on November 5, 2026, at commit eac478f (https://github.com/Open-Dev-Society/OpenStock/tree/eac478f71dcff342d196a65c724dc955c221eeee)

## 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.