← OpenSourcePulse

Cal.com

Cal.com is a self-hostable, open-source alternative to Calendly. This page compiles its license, stack, deployment, maintenance and hosting details from public sources (updated 2026-06-15).

At a glance

category (analytics, CRM, file-storage, BI, etc.)
scheduling
SaaS-tool-it-replaces (e.g. 'Google Analytics', 'Notion')
Calendly
license type (MIT, AGPL, GPL, BSL, etc.)
AGPL-3.0 (+ commercial)
primary language/stack
Next.js (TypeScript), PostgreSQL
deployment method (Docker, Helm/K8s, bare-metal, one-click)
Docker, one-click (Vercel)
GitHub stars (snapshot, dated)
~33k (2025-06)
last-commit recency / maintenance activity
Very active
managed-hosting-available (yes/no + who offers it)
Yes - Cal.com Cloud (official)
minimum RAM/CPU footprint
~1 GB RAM
has-active-community (Discord/forum size tier)
Large - Discord

Open-source Calendly alternative; some enterprise features gated.

Official site / source ↗

Some links may be affiliate links that support this directory.

FAQ

What does Cal.com replace?
Cal.com is a self-hostable alternative to Calendly.

What's notable about Cal.com?
Open-source Calendly alternative; some enterprise features gated.

Is the data here verified?
Yes — every entry is compiled from public sources and links out to its source.