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01. Overview & Pitch Details
SECTION 01 / 05Executive Pitch Summary
Commercial scheduling tools lock user data behind proprietary walled gardens, offer limited white-label branding, and restrict developer customization. Enterprise teams need scheduling that integrates deeply with internal CRM, telephony, and billing systems.
Cal.com is the open-source scheduling infrastructure. Featuring multi-calendar synchronization, round-robin team scheduling, automated routing forms, integrated Stripe payments, and modular App Store integrations with Zoom, Google Meet, and Salesforce.
Core Value Propositions
- ยท Universal Multi-Calendar Sync: Sync Google Calendar, Apple iCloud, Outlook 365, and CalDAV simultaneously
- ยท White-Label Embed & Custom Domains: Seamless React embed widgets with complete custom CSS theming
- ยท Dynamic Routing Forms: Route qualified leads to specific account executives based on custom qualifying questions
- ยท Paid Booking & Stripe Integration: Charge clients directly for consulting sessions and appointments
- ยท 100% Self-Hostable & Open Source: Deploy on your own servers with complete database ownership under AGPLv3
Target Audience & ICP
Sales Teams, Medical Practices, Recruiters, Consultants, and Enterprise Organizations
Free Individual
$0/mo
Unlimited event types, unlimited bookings, Google/Outlook sync, video integrations
Teams Plan
$12/user/mo
Round-robin scheduling, team routing forms, collective booking, custom domain
Enterprise & Platform
$37/user/mo
SAML SSO, SCIM, HIPAA compliance, dedicated instance, custom API rate limits
02. Architecture & Technical Specs
SECTION 02 / 05Primary Tech Stack
Infrastructure & Mesh
Vercel + AWS us-east-1 + Cloudflare CDN
Security & Compliance
SOC2 Type II Certified ยท HIPAA Compliant ยท GDPR Compliant ยท ISO 27001
Open API Endpoint
https://api.cal.com/v2 โSource Code Repository
https://github.com/calcom/cal.com โ03. Founder Story & Manifesto
SECTION 03 / 05Origin Story
We launched Cal.com (originally Calendso) because we believed scheduling is core internet infrastructure that deserves to be open-source and customizable for every platform.
Maker Thesis
โTime is the most valuable non-renewable asset. Scheduling software should be open, private, and frictionless.โ
04. Changelog & Milestones
SECTION 04 / 05v4.6.0
LATEST DEPLOYMENTโข Cal AI: automated voice and email scheduling assistant โข Multi-seat round-robin booking with CRM lead reassignment โข Granular timezone auto-detection and buffer time controls
Upcoming Milestone 01
Instant SMS booking confirmations and WhatsApp reminder bot
Upcoming Milestone 02
Native mobile apps for iOS and Android with calendar widgets
05. FAQ & Support
SECTION 05 / 05Q: Can I self-host Cal.com for free?
Yes. Cal.com is open-source and can be deployed with Docker, Railway, or on bare-metal servers for free.
Q: Does Cal.com prevent double bookings across multiple calendars?
Yes. Cal.com checks busy time across all connected work and personal calendars simultaneously in real-time.
Meet the Founder
Verified MakerCo-Founder & Co-CEO of Cal.com
Co-Founder & Co-CEO of Cal.com (formerly Calendso), the open-source scheduling infrastructure for the internet. Believer in open startups, commercial open-source software (COSS), and distributed remote engineering. On a mission to save humanity 1 billion hours wasted on scheduling friction while maintaining complete data sovereignty.
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Steven Tey@steventeySat Aug 15 2026Replaced Calendly enterprise with Cal.com self-hosted two years ago and never looked back.