OSS Discovery

UN
Global
BACKEND & API
SELF-HOSTABLE
ACTIVELY MAINTAINED
FREEMIUM
Cal.com

CAL.COM

Cal.com streamlines meeting scheduling with effortless, email-hassle-free solutions. Unlock premium features with OAuth, API key, or platform authentication. Targeted at developers and enterprises, Cal.com offers scalable, secure infrastructure, while Cal.diy provides self-hosted, community-driven alternatives for personal, non-production use, with enterprise access available on request.

GITHUB STARS
42k
+12% this month
FORKS
13k
Active community
LAST PUSH
Apr 24, 2026
High momentum
WATCHERS
181
Tracking updates
LICENSE
MIT
Commercial use
**Cal.com** is a scheduling tool that streamlines meeting scheduling. It is built for developers and enterprises who need to schedule meetings without email hassles. It offers scalable and secure infrastructure.

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

TypeScript
TypeScript
CSS
CSS
HTML
HTML
PLpgSQL
PLpgSQL
JavaScript
JavaScript
MDX
MDX
Mermaid
Mermaid
Apex
Apex
Shell
Shell
Dockerfile
Dockerfile
PHP
PHP
Procfile
Procfile

VISUAL INTERFACE

Screenshot 1
Screenshot 2
Screenshot 3

The Quick Glance

Status
Active
Category
Backend & API
Pricing
Freemium
Self-Hosted
Yes
Available on
Web
Latest Release
v6.2.0
Mar 1, 2026

Relative Standing — across 1,284 tools

STARS42k
Top 7% globally
FORKS13k
Top 2% in Open Source
ACTIVITYHigh
Top 32% Activity
WATCHERS181
Top 20% Community