Cal.com | Open Scheduling Infrastructure

What it is

Cal.com is an open-source scheduling infrastructure platform designed to simplify appointment and meeting booking. It serves a wide range of users, from individuals seeking a simple personal scheduling tool to developers building custom scheduling platforms and large enterprises requiring robust, scalable solutions. The platform connects people through calendar scheduling by automating availability cross-referencing to prevent double bookings.

Main Features

Core Scheduling

• Calendar synchronization and cross-referencing to prevent double bookings
• Customizable availability settings with daily, weekly, or monthly limits
• Buffer time settings before and after events
• Custom, short booking links (e.g., cal.com/username)
• Support for multiple meeting types (video chat, phone call, in-person)

Advanced Functionality

• Collective events scheduling with multiple participants
• Recurring events capability
• Out of Office (OOO) scheduling
• Dynamic group links for booking with multiple people
• Requires confirmation feature for bookings
• Workflows automation

Integration & Customization

• Built-in Cal Video conferencing platform
• Payments integration through Stripe
• Embeddable booking pages
• Support for 65+ languages
• Customizable booking pages to match brand identity
• Extensive app integrations through App Store

Notifications & Management

• Automated meeting reminders via SMS or email
• Booking confirmations and updates
• Rescheduling capabilities for bookers
• Webhooks for automation and notifications

How it works

Individual Scheduling

Users connect their calendar to the platform, set their availability preferences including working hours and buffer times, and share their personalized booking link. Bookers can view available time slots, select their preferred time, and receive automatic confirmations with calendar invitations.

Team Collaboration

Teams use collaborative scheduling features to manage group availability, create shared booking pages, and coordinate meetings across multiple team members. The system handles complex scheduling scenarios while maintaining everyone's availability constraints.

Enterprise Implementation

Large organizations deploy Cal.com with enterprise-level features including advanced API access, custom branding, and integration with existing business systems through the comprehensive developer platform and API.

Developer Integration

Developers utilize the Cal.com API, starter kit, and platform features to build custom scheduling applications or integrate scheduling capabilities into existing products and services.

Key Points

• Open-source infrastructure with both self-hosted and SaaS hosting options
• Privacy-first design approach prioritizing user data protection
• Unlimited and free plan available for individual users
• Positioned as an alternative to solutions like Calendly with emphasis on open ecosystem and customization
• Trusted by fast-growing companies worldwide across various industries
• Offers both built-in video conferencing (Cal Video) and integration with third-party video platforms

Additional Details

• Pricing: Offers free plan for individuals with paid plans for teams and enterprises (specific pricing details available on cal.com/pricing)
• Availability: Cloud-based service with self-hosting options via Docker and GitHub
• Requirements: Web-based access with calendar integration capabilities
• API Access: Comprehensive public API (v2) for custom integrations and development
• Mobile Access: Desktop app available for download
• Support: Help documentation available at cal.com/help, with support contact at support@cal.com
• Security: Detailed security information available at cal.com/security
• Compliance: Registered trademark (Cal.com® and Cal®) with detailed privacy and terms policies