Cal.com

★ 47.9k

A self-hosted alternative to Calendly

GNU Affero General Public License v3.0Open Source — No Paywall5 ContainersDocker · Compose · SourceNeeds Postgres0 documented maintainers

About

Cal.diy is a community-maintained, MIT-licensed scheduling platform intended for people who want to run their own instance. It is presented as the open-source community edition of Cal.com, with...

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Weekly Recap — Aug 14, 2026 – Aug 21, 2026Aug 21, 2026

Features

scheduling platform
self-hosting
local Postgres setup
seeded test users
admin user
database migration
email viewing during development
logger level configuration

Details

Last Updated: Aug 26, 2026
Created: Mar 22, 2021
Install Methods: dockerdocker-composesource
Requirements: Node.js >=18.xPostgreSQL >=13.xYarnDockerDocker ComposeMailhog
Authentication: local
API: REST
Runtime / Stack: Nodejs
Privacy & Independence: No Cloud Required
User Model: Multi-User
Deployment: Deployment: Docker Compose ✓5 Containers — moderate hosting footprintRuns as 5 containers

Docker Compose

5 services · database: postgres · infra: postgres, redis

no resource limits declared

needs persistent storage (2 volumes)

docker-compose.yml · @ d1ad4ea · scanned Jun 4, 2026

# Use postgres/example user/password credentials

volumes:
  database-data:
  redis-data:

networks:
  stack:
    name: stack
    external: false

services:
  database:
    container_name: database
    image: postgres
    restart: always
    volumes:
      - database-data:/var/lib/postgresql
    environment:
      - POSTGRES_USER=unicorn_user
# ...

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Open-source health

FOSS with issues

agplv3-mixedopen-corecopyleft-clapoisoned-sourcevc-fundingmisleading-licensing

Source: isitreallyfoss.com · reviewed Jun 2025

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