cal.diy vs OpenWA
cal.diy and OpenWA share 10 technologies: @nestjs/core, Postgres, Redis, NestJS, helmet, class-validator, class-transformer, Zod, qrcode, and sharp. Both are written in TypeScript.
LinkedInWhat they share and what sets them apart
calcom
cal.diy
Scheduling infrastructure for absolutely everyone.
TypeScript49.7kRead on November 5, 2026, at commit 2eb48ecWhat is cal.diy built with?Only in cal.diy
connect
- Next.js
- @nestjs/bull
- @nest-lab/throttler-storage-redis
- bull
- Sentry
- Stripe
- React
- @next/third-parties
- Vercel
PostHog- @trpc/server
- tRPC
- lru-cache
kysely
next-auth
- nest-winston
tslog
winston
winston-transport
- Tailwind CSS
- classnames
- next-themes
class-variance-authority
- React Hook Form
- TanStack
sonner
- Framer
@formkit/auto-animate
- Radix UI
- react-select
- react-inlinesvg
react-sticky-box
- Lucide
- bcryptjs
- jose
- otplib
markdown-it
- node-html-parser
react-qr-code
@hookform/resolvers
ink
- ink-text-input
- ink-select-input
- ical.js
tailwind-merge
- Base UI
- entities
nodemailer
- handlebars
- dompurify
- jimp
- remove-markdown
- sanitize-html
- turndown
marked
- Prisma
- node-ical
lexical
- react-easy-crop
- cmdk
- react-colorful
react-day-picker
In common
rmyndharis
OpenWA
Free, Open Source, Self-Hosted WhatsApp API Gateway
TypeScript16.6kRead on November 7, 2026, at commit 79d7f86What is OpenWA built with?Only in OpenWA
Side by side
cal.diyOpenWA
SizeLines written by people and agents, without generated ones; code files, without tests.
cal.diy554,567 lines written4,308 code files
OpenWA488,202 lines written1,013 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
cal.diy6.3% of its commits signed by AIWith Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot
OpenWA0.2% of its commits signed by AIWith Claude Code and Cursor
ActivityFrom GitHub and its history, on the day SeeRepo read it.
cal.diyLast push November 3, 202616,069 commits49,716 stars
OpenWALast push November 7, 20266,716 commits16,581 stars
TestsThe files that test the code, and the share of code files a test imports.
cal.diy644 test files14.8% of its code files have a test that imports them
OpenWA1,134 test files74.5% of its code files have a test that imports them
Frequently asked questions
Which is bigger, cal.diy or OpenWA?
cal.diy, with 554,567 lines written; OpenWA has 488,202.
The proof: calcom/cal.diy's code at commit 2eb48ec
Which has more GitHub stars, cal.diy or OpenWA?
cal.diy, with 49,716 stars; OpenWA has 16,581.
The proof: calcom/cal.diy on GitHub
Which has more tests, cal.diy or OpenWA?
OpenWA, with 1,134 test files; cal.diy has 644.
The proof: rmyndharis/OpenWA's code at commit 79d7f86
Which was updated more recently, cal.diy or OpenWA?
OpenWA: its last push was on November 7, 2026, and cal.diy's on November 3, 2026.
The proof: rmyndharis/OpenWA's commits on GitHub
Which has more commits signed by AI, cal.diy or OpenWA?
cal.diy: an AI signed 6.3% of its commits, with Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot; in OpenWA, 0.2%.
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