Self-hosted alternatives to Calendly

Self-hosted meeting scheduling, with no per-user fee. Below are 9 open source options you host on your own server — with no monthly per-user fee and full control of your data.

Cal.diy

★ 45,749

Online appointment scheduling system.

Booking and Scheduling MIT

QloApps

★ 13,741

Customizable and intuitive web-based hotel reservation system and a booking engine.

Booking and Scheduling OSL-3.0

Rallly

★ 5,135

Create polls to vote on dates and times (alternative to Doodle).

Booking and SchedulingPolls and Events AGPL-3.0

Easy!Appointments

★ 4,230

Allows your customers to book appointments with you via the web.

Booking and Scheduling GPL-3.0

Hi.Events

★ 3,879

Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets.

Booking and SchedulingE-commerce AGPL-3.0

Alf.io

★ 1,587

Ticket reservation system.

Booking and Scheduling GPL-3.0

LibreBooking

★ 746

Resource scheduling solution offering a flexible, mobile-friendly, and extensible interface for organizations to manage resource reservations.

Booking and Scheduling GPL-3.0

OpenSlides

★ 617

Presentation and assembly system for managing and projecting agenda, motions and elections of an assembly.

Conference ManagementBooking and Scheduling MIT

Seatsurfing

★ 296

Webbased app to book seats, desks and rooms for offices.

Booking and Scheduling GPL-3.0

Frequently asked questions

Is there a free self-hosted alternative to Calendly?

Yes. We've gathered 9 self-hosted, open source alternatives to Calendly — including Cal.diy, QloApps, Rallly. You run all of them on your own server.

What is the best open source alternative to Calendly?

Cal.diy is one of the most popular (45,749 GitHub stars). The "best" depends on your case — compare the options below.

Do I need a server to replace Calendly?

Yes. You can use a home server (homelab) or a cheap VPS (from ~€4/mo). See the hosting suggestions on this page.