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

📆 CLI calendar application

📇 Synchronize calendars and contacts.

A Java library for parsing and building iCalendar data models

iCalendar (ics) file generator for node.js

Pythonic and easy iCalendar library (rfc5545)

Lightweight and fast recurring dates library for PHP (RFC 5545)

Generate calendars in the iCalendar format

✅ A simple, standards-based, cli todo (aka: task) manager.

Parser for iCalendar Events • PHP 8+, 7 (≥ 7.4), 5 (≥ 5.6)

📅 Generates URLs and downloadable ICS files for adding events to popular calendar apps.

biweekly is an iCalendar library written in Java.

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.

Elixir date recurrence library based on iCalendar events

A set of classes used to parse and handle iCalendar (.ICS) files

A recurrence processor for Java

Fully Functional Voice Based Natural Language UI

Embed a highly customizable web calendar into your website using ICal source links

WebCalendar is a PHP application used to maintain a calendar for a single user or an intranet group of users. It can also be configured as an event calendar.

ICSx⁵ is an Android app to subscribe to remote or local iCalendar files (like time tables of your school/university or event files of your sports team).