Fitness Calendar

A private and fully offline activity tracker.GPL-2.0-only

Persian Calendar

Android Persian CalendarGPL-3.0-only

Month Calendar Widget

Calendar widgetApache-2.0

CalEF (Calendar Entry Formatter)

Create and send Appointment-Confirmation-Message from Android-Calendar-Entry.GPL-3.0-or-later

Month Calendar Widget

Calendar widget of the current monthApache-2.0

Calendar Trigger

Trigger actions on calendar eventsGPL-3.0-or-later

Calendar Color

Change the calendar colorMIT

French Calendar

French Revolutionary calendar widgetGPL-3.0-only

Shortcuts for Calendar/Contacts

Add shortcuts for new calendars and contactsGPL-3.0-only

Birthday Calendar

Creates birthday events from all other calendar's dataGPL-3.0-only

Fossify Calendar

Securely plan, schedule, and set reminders with our private calendar app.GPL-3.0-only

Calendar Import-Export

Import, Export & Backup your calendars using ics filesGPL-3.0-only

Tuta Calendar

Quantum-safe encrypted planner to schedule & manage your events & sync calendarsGPL-3.0-or-later

Etar - OpenSource Calendar

Etar is a material designed open source calendar, for everyone!GPL-3.0-only

Seasonal Foods Calendar

Your practical helpling for seasonal/regional foods!GPL-3.0-only

Birthday Adapter

Birthday Calendar AdapterGPL-3.0-only

Periodical

Menstrual/period calendarGPL-3.0-or-later

Tacere

Silence phone on calendar eventsBSD-3-Clause

MinCal Widget

Minimal Calendar WidgetBSD-3-Clause

ShiftCal

Shift CalendarGPL-3.0-only