Source: https://seerepo.com/compare/calcom/cal.diy/vs/prowler-cloud/prowler
Markdown source: https://seerepo.com/compare/calcom/cal.diy/vs/prowler-cloud/prowler.md
Description: cal.diy and prowler share 20 technologies: Next.js, Postgres, Sentry, React, @next/third-parties, PostHog, next-auth, Zod, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, TanStack, Framer, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, cmdk, and react-day-picker. cal.diy is written in TypeScript and prowler in Python.

# cal.diy vs prowler

cal.diy and prowler share 20 technologies: Next.js, Postgres, Sentry, React, @next/third-parties, PostHog, next-auth, Zod, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, TanStack, Framer, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, cmdk, and react-day-picker. cal.diy is written in TypeScript and prowler in Python.

- [calcom/cal.diy](https://seerepo.com/r/calcom/cal.diy): Scheduling infrastructure for absolutely everyone.
- [prowler-cloud/prowler](https://seerepo.com/r/prowler-cloud/prowler): This repo hosts Prowler OSS (CLI and Local Server). Prowler is the world’s most widely used open-source cloud security platform that automates security and compliance across any cloud environment for Humans and AI Agents.

## What they share and what sets them apart

- In common: Next.js, Postgres, Sentry, React, @next/third-parties, PostHog, next-auth, Zod, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, TanStack, Framer, Radix UI, Lucide, @hookform/resolvers, tailwind-merge, cmdk, react-day-picker
- Only in cal.diy: connect, @nestjs/core, @nestjs/bull, @nest-lab/throttler-storage-redis, bull, Redis, Google, Stripe, NestJS, Vercel, @trpc/server, tRPC, lru-cache, kysely, helmet, class-validator, class-transformer, nest-winston, tslog, winston, winston-transport, classnames, sonner, @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, nodemailer, handlebars, dompurify, jimp, remove-markdown, sanitize-html, sharp, turndown, marked, Prisma, node-ical, lexical, react-easy-crop, react-colorful, @lexical/markdown
- Only in prowler: Django, azure-mgmt-cosmosdb, azure-mgmt-storage, azure-storage-blob, psycopg2-binary, Celery, Neo4j, django-celery-results, OpenAI, drf-nested-routers, fastmcp, djangorestframework, werkzeug, fonttools, alive-progress, matplotlib, azure-identity, azure-keyvault-keys, django-allauth, djangorestframework-simplejwt, dj-rest-auth, lxml, reportlab, defusedxml, markdown, azure-mgmt-compute, azure-mgmt-containerregistry, azure-mgmt-network, azure-mgmt-resource, Gunicorn, botocore, boto3, django-guid, uvicorn-worker, recharts, xyflow, @react-stately/utils, D3, topojson-client, use-stick-to-bottom, world-atlas, @dagrejs/dagre, @lezer/highlight, @uiw/react-codemirror, CodeMirror, @radix-ui/react-icons, LangChain, ai, @ai-sdk/react, @aws-sdk/client-bedrock-runtime, js-yaml, react-markdown, streamdown

## Side by side

| | cal.diy | prowler |
|---|---|---|
| Size | 554,567 lines written, 4,308 code files | 1,231,989 lines written, 4,452 code files |
| Who writes it | 6.3% of its commits signed by AI. With Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot | 1.1% of its commits signed by AI. With Claude Code, GitHub Copilot, CodeRabbit, and Cursor |
| Activity | Last push November 3, 2026, 16,069 commits, 49,716 stars | Last push November 8, 2026, 8,762 commits, 15,193 stars |
| Tests | 644 test files. 14.8% of its code files have a test that imports them | 2,848 test files. 17.1% 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 prowler?

prowler, with 1,231,989 lines written; cal.diy has 554,567.

The proof: [prowler-cloud/prowler's code at commit 9f6ebb0](https://github.com/prowler-cloud/prowler/tree/9f6ebb00e11a520de4f45a6eb5963eda28e09a86)

### Which has more GitHub stars, cal.diy or prowler?

cal.diy, with 49,716 stars; prowler has 15,193.

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

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

prowler, with 2,848 test files; cal.diy has 644.

The proof: [prowler-cloud/prowler's code at commit 9f6ebb0](https://github.com/prowler-cloud/prowler/tree/9f6ebb00e11a520de4f45a6eb5963eda28e09a86)

### Which was updated more recently, cal.diy or prowler?

prowler: its last push was on November 8, 2026, and cal.diy's on November 3, 2026.

The proof: [prowler-cloud/prowler's commits on GitHub](https://github.com/prowler-cloud/prowler/commits)

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

cal.diy: an AI signed 6.3% of its commits, with Devin, Claude Code, CodeRabbit, Cursor, and GitHub Copilot; in prowler, 1.1%.

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)
- prowler-cloud/prowler: Read on November 8, 2026, at commit 9f6ebb0 (https://github.com/prowler-cloud/prowler/tree/9f6ebb00e11a520de4f45a6eb5963eda28e09a86)

## 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.