Hosted Cal.com: Professional Scheduling Without DevOps
Run a dedicated Cal.diy instance on your custom domain. Flat pricing, no per-seat fees, full EU data control. Calendly costs scale with your team. Opsily doesn't.
Why Cal.com Now Ships as Cal.diy
In April 2026, Cal.com Inc. moved its flagship product to a commercial (closed-source) license. For teams that need an open-source path, Cal.diy launched as the MIT-licensed community edition.
This matters for managed hosting: every managed host (including Opsily) runs Cal.diy, the open-source version. You get:
- Full source code transparency
- No proprietary lock-in
- MIT licensing (use it however you want)
- Community roadmap on GitHub (48.6K stars, 16.5K commits)
The alternative is Cal.com Cloud, the SaaS tier. It's hosted by Cal.com, runs on shared servers, and charges per user.
Managed Cal.diy hosting is the third path: a dedicated instance on your own domain, flat pricing, zero per-seat fees.
Self-Hosting Cal.diy Looks Cheap Until You Factor In Labor
The open-source code is free. The infrastructure is $5-15/month. But hosting Cal.diy yourself means:
- Setup: 20-40 hours to clone the repo, configure PostgreSQL, set environment variables, handle OAuth providers, acquire SSL certificates
- Backups: You own it. Daily encrypted backups. Storage, retention, recovery testing.
- Monitoring: Database performance, disk space, failed background jobs. Alerts at 3am.
- Updates: Test each Cal.diy version in staging, plan migrations, schedule downtime, debug breaking changes
- Security patches: Monitor GitHub for vulnerabilities, apply OS updates, renewal of SSL certificates
As industry experts recognize: "The software is free. The engineer-hours are not."
Managed Cal.diy hosting answers a simple question: is your time worth $30/month? If yes, managed hosting scales. If no, DIY works — until your team grows or your server catches fire at 2am and you are on call.
Honest answer: most teams below 10 people can self-host. Teams above 50 people almost always choose managed.
DIY Self-Hosted vs Opsily Managed
A side-by-side look at cost, effort, and risk.
Opsily plans are all-inclusive: no hidden per-user add-ons. Labor cost estimates based on typical DIY deployments.
Why Opsily for Cal.diy
Three key reasons teams choose hosted Cal.com over DIY.
Hosted Cal.com With No Per-Seat Fees
Your team grows from 5 to 50 people. Your Cal.diy bill stays the same. On Calendly, that same team would cost $600-1,400 per month. On Opsily, it's one flat rate forever. Scale your business. Don't scale your SaaS spend.
EU Data Residency
Your booking data, attendee details, and calendar integrations stay in German data centers. Article 28 data processing agreement available. No US transfers. No Patriot Act risk. GDPR compliance by architecture, not by paperwork.
Managed Updates & Backups
Cal.diy gets new features weekly. Opsily tests, deploys, and handles database migrations for you. You wake up to the latest version. We handle downtime windows. No more choosing between safety and currency.
Built for teams who need reliability
Saved annually per 50-person team vs Calendly
Same Cal.diy features (round-robin booking, team scheduling, calendar sync, automations). Zero per-seat licensing. Flat pricing. You get the cost model of self-hosting with the convenience of managed infrastructure.
See our pricingLaunch Your Hosted Cal.diy in 4 Steps
From signup to first booking link takes 3 minutes.
Pick Small, Medium, Large, or Unlimited based on your event volume and custom domains. No credit card required. Start free.
Point your custom domain to Opsily. We provision a dedicated Cal.diy instance, enable SSL automatically, set up daily backups and monitoring.
Add team members. No per-seat fees. Configure team scheduling, round-robin distribution, collective events, and reminders. Everyone counts the same.
Pick Small, Medium, Large, or Unlimited based on your event volume and custom domains. No credit card required. Start free.
Point your custom domain to Opsily. We provision a dedicated Cal.diy instance, enable SSL automatically, set up daily backups and monitoring.
Add team members. No per-seat fees. Configure team scheduling, round-robin distribution, collective events, and reminders. Everyone counts the same.
Choose Your Plan
Pick Small, Medium, Large, or Unlimited based on your event volume and custom domains. No credit card required. Start free.
Deploy to Your Domain
Point your custom domain to Opsily. We provision a dedicated Cal.diy instance, enable SSL automatically, set up daily backups and monitoring.
Invite Your Team
Add team members. No per-seat fees. Configure team scheduling, round-robin distribution, collective events, and reminders. Everyone counts the same.
Connect Integrations & Automate
Sync Google Calendar, Outlook, Teams, Zoom. Use n8n workflows to automate post-booking actions: create CRM records, send emails, raise tickets, log time entries.
Extend Cal.diy With Automation
Cal.diy pairs naturally with workflow automation and identity management. Opsily hosts them all on the same infrastructure.
Self-hosted workflow automation with robust PostgreSQL data persistence
Security & Compliance Built In
Your booking data deserves protection. Every Opsily plan includes the essentials.
GDPR Compliant
Your booking data stays in EU data centers. Article 28 data processing agreement available. Full compliance by architecture, not by audit.
Daily Encrypted Backups
Automated daily backups stored separately from your live database. Restore to any point in the past 30 days. 100% data recovery SLA.
Automatic SSL Certificates
Custom domain? We handle TLS certificates and automatic renewal. Zero manual cert management. Always encrypted.
24/7 Monitoring
Infrastructure monitoring, database health checks, and alerting. We know about problems before you do. Downtime is rare.
Open Source & No Lock-In
Cal.diy is MIT-licensed. Export your data, your Postgres database, and your booking history any time. Zero vendor lock-in.
Simple, Transparent Pricing
Choose the plan that fits your booking volume. All plans include GDPR-compliant EU hosting, isolated VM, daily backups, SSL, monitoring, and support.
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Frequently Asked Questions
Answers to common questions about hosted Cal.diy.
Cal.diy is the MIT-licensed, open-source edition of Cal.com. In April 2026, Cal.com Inc. moved its flagship product to a commercial license, so Cal.diy was launched as the community path for self-hosters. Cal.com Cloud is the vendor-hosted SaaS version, with per-user pricing and shared infrastructure. Hosted Cal.diy on Opsily is a third option: a dedicated instance on your custom domain, flat pricing, zero per-seat fees, full EU data control.
Ready to Stop Paying Per-User Scheduling Fees?
Opsily hosted Cal.diy works at any team size. No setup cost. No per-seat add-ons. EU data, automatic backups, managed updates.