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Open-Source Alternative Business Software MIT Replaces Calendly
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Cal.com

Scheduling & Event Management

Self-host your own scheduling page, no vendor required

50K
Β· Self-Host Ready Β· 100% Free & Open

Proprietary Software Replaced by Cal.com

Cal.com is engineered to replace closed-source proprietary software platforms, giving organizations complete data custody and eliminating recurring per-seat fees:

About Cal.com

Cal.diy is the community edition of Cal.com for personal self-hosting, with calendar sync, video conferencing, payment support, and a REST API.

Key Open-Source Benefits:

  • Zero vendor lock-in: Complete control over your underlying database, APIs, and business data.
  • Self-hostable anywhere: Deploy on AWS, Hetzner, GCP, or on-premise bare-metal servers.
  • Full data privacy: Satisfies GDPR, HIPAA, and compliance standards by keeping customer records on your private VPC.
  • Open license: Permissive licensing allows extending, customizing, and modifying the code base.
DevOps & Infrastructure Sprint

Want to self-host Cal.com with production SLA?

Startupbricks architects, hardens, and launches self-hosted open-source clusters for founders and tech teams. We configure automated encrypted backups, VPC isolation, monitoring alerts, and zero-downtime upgrades.

Builder Ecosystem

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