cal.diy vs tambo
cal.diy and tambo share 24 technologies: Next.js, NestJS, Postgres, Sentry, React, PostHog, tRPC, next-auth, helmet, class-validator, class-transformer, Zod, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, Radix UI, Lucide, jose, @hookform/resolvers, tailwind-merge, Base UI, dompurify, and cmdk. Both are written in TypeScript.
LinkedInWhat they share and what sets them apart
calcom
cal.diy
Scheduling infrastructure for absolutely everyone.
TypeScript50kRead on November 13, 2026, at commit ef7954dWhat is cal.diy built with?Only in cal.diy
connect
- @nestjs/bull
- @nest-lab/throttler-storage-redis
- bull
- Redis
- Stripe
- @next/third-parties
- Vercel
- @trpc/server
- lru-cache
kysely
@axiomhq/winston
- nest-winston
tslog
winston
winston-transport
- classnames
- 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
- otplib
markdown-it
- qrcode
react-qr-code
@todesktop/client-core
ink
- ink-text-input
- ink-select-input
@googleapis/oauth2
- ical.js
- entities
nodemailer
- bcryptjs
- handlebars
@trigger.dev/sdk
@sendgrid/client
jimp
- remove-markdown
- sanitize-html
- sharp
- turndown
marked
- Prisma
- node-html-parser
- node-ical
- lexical
- react-easy-crop
- react-colorful
react-day-picker
@lexical/markdown
In common
tambo-ai
tambo
Generative UI SDK for React
TypeScript11.2kRead on November 12, 2026, at commit 6e2c1bfWhat is tambo built with?Only in tambo
- MCP
OpenAI
AWS S3- Resend
@aws-sdk/s3-request-presigner
- Anthropic
- Vite
- Drizzle
ag-ui
@ai-sdk/provider
json-schema
- OpenTelemetry
geist
embla-carousel-react
- react-medium-image-zoom
- react-speech-recognition
recharts
usehooks-ts
vaul
- @radix-ui/react-icons
react-icons
- js-tiktoken
- @vercel/og
highlight.js
- react-markdown
rehype-raw
- PostCSS
- ora
- js-yaml
partial-json
@mastra/client-js
gpt-tokenizer
- zod-to-json-schema
- Ajv
@standard-schema/spec
@standard-community/standard-json
tiptap
- Leaflet
leaflet.markercluster
react-leaflet
- streamdown
rehype-harden
unified
- react-media-recorder
Side by side
cal.diytambo
SizeLines written by people and agents, without generated ones; code files, without tests.
cal.diy554,774 lines written4,286 code files
tambo223,355 lines written877 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
tambo4.3% of its commits signed by AIWith Claude Code, Cursor, GitHub Copilot, and CodeRabbit
ActivityFrom GitHub and its history, on the day SeeRepo read it.
cal.diyLast push November 11, 202616,071 commits49,990 stars
tamboLast push November 7, 20265,545 commits11,225 stars
TestsThe files that test the code, and the share of code files a test imports.
cal.diy645 test files14.9% of its code files have a test that imports them
tambo274 test files30.6% of its code files have a test that imports them
Frequently asked questions
Which is bigger, cal.diy or tambo?
cal.diy, with 554,774 lines written; tambo has 223,355.
The proof: calcom/cal.diy's code at commit ef7954d
Which has more GitHub stars, cal.diy or tambo?
cal.diy, with 49,990 stars; tambo has 11,225.
The proof: calcom/cal.diy on GitHub
Which has more tests, cal.diy or tambo?
cal.diy, with 645 test files; tambo has 274.
The proof: calcom/cal.diy's code at commit ef7954d
Which was updated more recently, cal.diy or tambo?
cal.diy: its last push was on November 11, 2026, and tambo's on November 7, 2026.
The proof: calcom/cal.diy's commits on GitHub
Which has more commits signed by AI, cal.diy or tambo?
cal.diy: an AI signed 6.3% of its commits, with Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot; in tambo, 4.3%.
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