Kozea / Radicale

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

pimutils / khal

:calendar: CLI calendar application

schedule-x / schedule-x

JavaScript event calendar. Modern alternative to fullcalendar and react-big-calendar.

icalendar / icalendar

icalendar.rb main repository

collective / icalendar

icalendar parser library for Python

kewisch / ical.js

Javascript parser for ics (rfc5545) and vcard (rfc6350) data

ical-org / ical.net

iCal.NET - iCalendar library for .Net

ical4j / ical4j

A Java library for parsing and building iCalendar data models

adamgibbons / ics

iCalendar (ics) file generator for node.js

TechbeeAT / jtxBoard

jtx Board allows you to manage your Journals (like meeting minutes), Notes and Tasks in one Android app. The app is compatible with the iCal standard (RFC5545) and is integrated with DAVx5 to allow the synchronisation of entries through CalDAV.

spatie / icalendar-generator

Generate calendars in the iCalendar format

sabre-io / vobject

:date: The VObject library for PHP allows you to easily parse and manipulate iCalendar and vCard objects

lennart-k / rustical

a calendar server aiming to be simple, fast and passwordless

benginN / caltask

Self-hosted calendar + tasks in one small container — week view, recurring events done right, read-only .ics sync, Google Calendar/Tasks import, PWA, dashboard embed. No CalDAV, no build step, no CDN.

percentwasphose / itmo-schedule-calendar

Расписание ИТМО в календаре: ICS-подписка и read-only CalDAV для Apple Календаря, Google Календаря, Thunderbird, DAVx⁵, Outlook, Nextcloud и Android.

promaaa / sync-calendar-omarchy

Chronica: calendar & clock for the Omarchy bar. Two-way sync with Google, CalDAV (iCloud, Nextcloud) and JMAP (Fastmail); read-only .ics feeds (Proton, Outlook); reminders, meeting join, offline calendar.