DayOtter icon
DayOtter icon

DayOtter

Open-source, AI-native scheduling platform merges all calendars into a conflict-free system with a single link, team round-robin, routing forms, group polls, reminders across channels, Stripe integration, and self-hostable Docker deployment for private control.

DayOtter screenshot 1

Cost / License

  • Freemium (Subscription)
  • Open Source (AGPL-3.0)

Platforms

  • Online
  • Android
  • Self-Hosted
DayOtter screenshot 1
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Features

  1.  Scheduling
  2.  Book Appointments Online
  3.  Appointment Scheduling

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AlternativeTo Category

Office & Productivity

GitHub repository

  •  32 Stars
  •  4 Forks
  •  61 Open Issues
  •   Updated  
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Official Links

AppStores & Other Links

Download from Google Play Store

What is DayOtter?

DayOtter is an open-source, AI-native scheduling platform — an open alternative to Calendly and Cal.com, with the AI included rather than paywalled.

It connects all your calendars (Google, Microsoft 365, Apple/CalDAV, and ICS feeds) and treats them as one, so a personal appointment automatically blocks a work slot and you never get double-booked. Share one booking link that respects every calendar you own.

On top of the core scheduling it adds booking pages, team round-robin and collective scheduling, routing forms, group polls, out-of-office and buffers, reminders (email, Slack, SMS, WhatsApp, push), and payments via Stripe.

Its built-in assistant, Otter, is confirm-first — it drafts changes to your calendar and waits for your approval, and you can point it at your own local model so nothing leaves your infrastructure. A plugin SDK lets you extend it further.

DayOtter is licensed AGPL-3.0 and is fully self-hostable — run the whole stack, including the AI, on your own servers with Docker.