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Cal.com

Open-source scheduling for teams — a Calendly alternative with full branding control.

Alternative to

  • Calendly LogoCalendly
Cal.com logo

Cal.com is an open-source scheduling platform for individuals and teams. It offers bookable event types, calendar sync, team routing, and embeds — self-hosted or hosted. Ideal for sales, consulting, and customer appointments.

Key features

  • 01Bookable event types
  • 02Google and Outlook calendar sync
  • 03Team scheduling and round-robin
  • 04Embeddable booking pages
  • 05Automatic reminders
  • 06API and webhooks

Benefits

  • 01No Calendly fees per user
  • 02Custom branding on booking pages
  • 03Self-hosting for appointment and customer data
  • 04Seamless integration with CRM and support

Is Cal.com the right choice?

Not every tool fits every company. We help you decide whether Cal.com is the right choice or whether another open source solution better matches your requirements.

Request a consultation

How we support your company

01

Consulting

Together we assess whether Cal.com is the right solution for your company.

02

Rollout

We install Cal.com, configure users, roles, and processes, and handle complete data migration.

03

Hosting

On request, we operate Cal.com with hosting on servers in Germany or within the EU.

04

Custom extensions

If you need additional features or integrations, we build them directly for your company.

05

Maintenance & support

We handle updates, monitoring, backups, and long-term operations.

Custom adjustments

Open source software offers a decisive advantage over many classic cloud solutions.

Because the source code is publicly available, features can be extended, integrations built, and processes tailored to your company.

When needed, we develop:

  • 01Custom modules
  • 02Custom dashboards
  • 03Integrations with existing systems
  • 04Automations
  • 05Mobile apps
  • 06Customer portals
  • 07Internal tools
  • 08Custom user interfaces

That turns an existing open source solution into software that fits your company perfectly.

Technical implementation

We take care of the complete technical infrastructure.

Introducing an open source solution does not end with installation. On request, we handle full technical operations and integrate the software securely into your existing IT landscape.

Infrastructure

  • Docker & Docker Compose
  • Linux servers
  • PostgreSQL
  • Redis
  • Object storage

Security

  • SSL certificates
  • Reverse proxy with Caddy
  • Firewall configuration
  • Security updates
  • Access concepts

Operations

  • Monitoring
  • Backups
  • Disaster recovery
  • Performance optimization
  • High availability when needed

Integration

  • REST APIs
  • Webhooks
  • SMTP
  • LDAP / SSO
  • n8n
  • Custom interfaces

Deployment

Depending on the project, we operate Cal.com for example

  • 01On your existing infrastructure
  • 02In your cloud
  • 03On dedicated servers
  • 04In a GDPR-compliant hosting environment in Germany

Operations & maintenance

We handle full technical operations — from setup through ongoing support.

  • 01Installation
  • 02Updates
  • 03Monitoring
  • 04Backups
  • 05Recovery
  • 06Security updates
  • 07SSL
  • 08Domain setup
  • 09User management
  • 10Performance
  • 11API integrations

Typical technologies

The stack we use to operate and integrate open source solutions reliably.

  • Docker
  • Docker Compose
  • Linux
  • Caddy
  • PostgreSQL
  • Redis
  • n8n
  • GitHub Actions
  • REST APIs
  • Webhooks
  • SMTP
  • OAuth / SSO
  • Hetzner Cloud
  • Azure
  • AWS

Technical information

License
AGPL-3.0 (Community Edition)
Deployment
Docker, Self-hosted, Cloud
Suitable for
Sales teams, Consultancies, Agencies, software companies with demo booking

Integrations

  • Google Calendar
  • Outlook
  • Zoom
  • API
  • n8n

FAQ

More matching open source solutions

Recommended solutions

Interested in Cal.com?

Whether you want to roll out Cal.com yourself or need an experienced partner for planning, rollout, and operations — we support you at every step.