Cal.com moved its production code private, leaving Cal.diy as a thinner community edition for personal use only. The shift removes enterprise features and raises maintenance questions for self-hosters. Easy!Appointments emerges as the strongest fully open alternative, while Nextcloud Calendar suits existing Nextcloud deployments. #opensource #selfhosted #calendaring
https://www.implicator.ai/cal-com-goes-private-as-self-hosted-calendly-choices-narrow-in-2026/

Cal.com Goes Private. What Are the Best Open Source Alternatives?
Cal.com moved its production code behind closed doors and left Cal.diy as a thinner MIT edition, turning the old open-source Calendly answer into a deployment decision. Easy!Appointments now looks like the safest general self-hosted bet, while Nextcloud Calendar fits existing Nextcloud shops. The harder part is security: open code still helps, but only when someone owns the server, updates, logs, rate limits, backups, patch windows, and risk.
