Open-source scheduling tools. To compare with Add More Colors to Calendar.

Cal.diy

Scheduling

Scheduling infrastructure for absolutely everyone.

QloApps

Scheduling

QloApps is a Free and Open-source hotel management and reservation system to take a hotel

Rallly

Scheduling

Rallly is an open-source scheduling and collaboration tool designed to make organizing eve

Radicale

Scheduling

A simple CalDAV (calendar) and CardDAV (contact) server.

Easy!Appointments

Scheduling

:date: Easy!Appointments - Self Hosted Appointment Scheduler

Hi.Events

Scheduling

Open-source event management and ticket selling platform — perfect for concerts, conferenc

DAVx⁵

Scheduling

DAVx⁵ is an open-source CalDAV/CardDAV suite and sync app for Android. You can also access

Pretix

E-commerce

Ticket shop application for conferences, festivals, concerts, tech events, shows, exhibiti

Baïkal

Scheduling

Baïkal is a Calendar+Contacts server

Pretalx

Scheduling

Conference planning tool: CfP, scheduling, speaker management

Manage My Damn Life (MMDL) is a self-hosted frontend for managing your CalDAV tasks and ca

Thunderbird Appointment

Scheduling

Invite others to grab times on your calendar. Choose a date. Make appointments as easy as

Free to host calendar availability picker - open-source cal.com / calendly alternative bui

LinkedIn Oncall

Monitoring & Observability

Oncall is a calendar tool designed for scheduling and managing on-call shifts. It can be u

Staffjoy Suite

Scheduling

Staffjoy V1, aka "Suite" - a scheduling application for hundreds of workers