cal.diy vs hydra
cal.diy and hydra share 11 technologies: Sentry, React, classnames, React Hook Form, TanStack, Framer, Radix UI, Lucide, markdown-it, @hookform/resolvers, 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/core
- Postgres
- @nestjs/bull
- @nest-lab/throttler-storage-redis
- bull
- Redis
- 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
- Tailwind CSS
- next-themes
class-variance-authority
sonner
@formkit/auto-animate
- react-select
- react-inlinesvg
react-sticky-box
- bcryptjs
- jose
- otplib
- node-html-parser
- qrcode
react-qr-code
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
hydralauncher
hydra
Hydra Launcher is an open-source gaming platform created to be the single tool that you need
TypeScript17.6kRead on November 6, 2026, at commit 2bb1787What is hydra built with?Only in hydra
- Vite
react-router-dom
- Electron
- Tokio
- @fontsource/noto-sans
sass-embedded
react-tooltip
react-loading-skeleton
tiptap
embla-carousel-react
- react-infinite-scroll-component
- x11rb
@floating-ui/dom
- rc-virtual-list
react-shadow
- @atlaskit/pragmatic-drag-and-drop
@monaco-editor/react
- canvas-confetti
recharts
@primer/octicons-react
- @phosphor-icons/react
- country-flag-icons
- jsonwebtoken
- file-type
yaml
- image
- thumbhash
- yup
- electron-log
Side by side
cal.diyhydra
SizeLines written by people and agents, without generated ones; code files, without tests.
cal.diy554,567 lines written4,308 code files
hydra444,027 lines written2,107 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
hydra9.6% of its commits signed by AIWith Claude Code, Codex, Cursor, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
cal.diyLast push November 3, 202616,069 commits49,716 stars
hydraLast push November 6, 20266,007 commits17,640 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
hydra341 test files17.2% of its code files have a test that imports them
Frequently asked questions
Which is bigger, cal.diy or hydra?
cal.diy, with 554,567 lines written; hydra has 444,027.
The proof: calcom/cal.diy's code at commit 2eb48ec
Which has more GitHub stars, cal.diy or hydra?
cal.diy, with 49,716 stars; hydra has 17,640.
The proof: calcom/cal.diy on GitHub
Which has more tests, cal.diy or hydra?
cal.diy, with 644 test files; hydra has 341.
The proof: calcom/cal.diy's code at commit 2eb48ec
Which was updated more recently, cal.diy or hydra?
hydra: its last push was on November 6, 2026, and cal.diy's on November 3, 2026.
The proof: hydralauncher/hydra's commits on GitHub
Which has more commits signed by AI, cal.diy or hydra?
hydra: an AI signed 9.6% of its commits, with Claude Code, Codex, Cursor, and GitHub Copilot; in cal.diy, 6.3%.
The proof: the commits each tool signed in hydralauncher/hydra
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