# Cal.diy

> Cal.diy is a free, open-source app you can self-host in the booking & scheduling category. Online appointment scheduling system. It has 48,880 GitHub stars, is released under the MIT license and ships a Docker image. It is a self-hosted alternative to Calendly.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/calcom/cal.diy |
| Website | https://cal.diy/ |
| GitHub stars | 48,880 |
| Forks | 15,289 |
| Open issues | 1,142 |
| License | MIT |
| License type | Open source |
| Language | TypeScript |
| Docker image | Yes |
| Platforms | Nodejs |
| Categories | Booking & Scheduling |
| Commits, last 12 months | 1,893 |
| Last commit | Sep 26, 2026 |
| Latest release | v6.2.0 (Mar 1, 2026) |
| Created | Mar 22, 2021 |
| Maintenance | Actively maintained |
| Archived | No |

Topics: open-source, typescript, nextjs, next-auth, postgresql, prisma, t3-stack, tailwindcss, trpc, turborepo

## Install

Cal.diy ships a Docker image; follow the README at https://github.com/calcom/cal.diy for the image name and environment variables.

Need it installed for you? [appsgit installation help](https://appsgit.com/services/install): a fixed quote by email, single app installs from $79.

## Cal.diy replaces

- [Calendly alternatives](https://appsgit.com/alternatives/calendly): A scheduling tool that lets people book meetings from your availability.

## Comparisons

- [Cal.diy vs Easy!Appointments](https://appsgit.com/compare/cal-diy-vs-easy-appointments): Pick Cal.diy for a modern, MIT-licensed Calendly-style booking app forked from Cal.com; pick Easy!Appointments for a lightweight PHP booking system for services and staff.

## Similar apps in Booking & Scheduling

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- [Easy!Appointments](https://appsgit.com/apps/easy-appointments): Allows your customers to book appointments with you via the web. (4,412 stars, GPL-3.0, PHP)
- [Hi.Events](https://appsgit.com/apps/hi-events): Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets. (4,050 stars, AGPL-3.0, PHP, Docker)
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- [OpenSlides](https://appsgit.com/apps/openslides): Presentation and assembly system for managing and projecting agenda, motions and elections of an assembly. (647 stars, MIT, Shell, Docker)
- [Seatsurfing](https://appsgit.com/apps/seatsurfing): Webbased app to book seats, desks and rooms for offices. (316 stars, GPL-3.0, Go, Docker)

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