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cal.diy vs Paradev

cal.diy and Paradev share 29 technologies: Next.js, Postgres, Redis, Sentry, Stripe, React, Vercel, PostHog, @trpc/server, tRPC, Zod, Tailwind CSS, next-themes, class-variance-authority, React Hook Form, sonner, Framer, Radix UI, Lucide, jose, ink, tailwind-merge, entities, dompurify, marked, lexical, cmdk, react-day-picker, and @lexical/markdown. Both are written in TypeScript.

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What 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

In common

ParadevAI

Paradev

Paradev is an open-source Codex App and Conductor alternative. Orchestrate an army coding agents in parallel with your own subscriptions.

TypeScript16.1kRead on November 7, 2026, at commit dd62f08What is Paradev built with?

Only in Paradev

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
cal.diy554,567 lines written4,308 code files
Paradev1,143,152 lines written10,284 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
Paradev14.5% of its commits signed by AIWith Claude Code, Cursor, and CodeRabbit
ActivityFrom GitHub and its history, on the day SeeRepo read it.
cal.diyLast push November 3, 202616,069 commits49,716 stars
ParadevLast push November 7, 20265,419 commits16,069 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
Paradev1,851 test files19.9% of its code files have a test that imports them

Frequently asked questions

Which is bigger, cal.diy or Paradev?
Paradev, with 1,143,152 lines written; cal.diy has 554,567.

The proof: ParadevAI/Paradev's code at commit dd62f08

Which has more GitHub stars, cal.diy or Paradev?
cal.diy, with 49,716 stars; Paradev has 16,069.

The proof: calcom/cal.diy on GitHub

Which has more tests, cal.diy or Paradev?
Paradev, with 1,851 test files; cal.diy has 644.

The proof: ParadevAI/Paradev's code at commit dd62f08

Which was updated more recently, cal.diy or Paradev?
Paradev: its last push was on November 7, 2026, and cal.diy's on November 3, 2026.

The proof: ParadevAI/Paradev's commits on GitHub

Which has more commits signed by AI, cal.diy or Paradev?
Paradev: an AI signed 14.5% of its commits, with Claude Code, Cursor, and CodeRabbit; in cal.diy, 6.3%.

The proof: the commits each tool signed in ParadevAI/Paradev

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