Calendly: The Best Open-Source Alternatives

Calendly positions itself as scheduling software that uses availability from connected calendars and automates bookings.

In the directory, Calendly is listed in the «Appointment Scheduling» category.

Here you can find open-source alternatives, and separately marked source-available alternatives, to «Calendly» (external link) in the category «Appointment Scheduling».

In the Category «Appointment Scheduling»

Cal.diy

Cal.diy provides self-hostable appointment booking with availability settings, calendar connections, and booking management.

  • Appointment Scheduling

Easy!Appointments

Easy!Appointments organizes online appointment booking for customers and teams on your own server.

  • Appointment Scheduling

ERPNext

ERPNext combines accounting, quotes, invoices, and time tracking with subscription and contract management in one web application.

  • Accounting
  • Appointment Scheduling
  • Calendar
  • Contracts
  • CRM
  • ERP
  • Invoicing
  • Project Time Tracking

Rallly

Rallly collects scheduling polls to find a common time for meetings and events.

  • Appointment Scheduling