日历和日程
jtx Board journals|notes|tasks
Keep track of journals, notes & tasks - iCalendar compliant and syncable with yo
TKWeek
A date and calendaring tool for Android
Tuta Calendar
Quantum-safe encrypted planner to schedule & manage your events & sync calendars
CalSync - Local Calendar Sync
Sync local calendars offline. Free, open source, no account needed.
Lux Alarm
Wake up with light! This alarm can only be turned off when your room is bright
ShiftSwift
A smart shift calendar
Suntimes Calendars
A calendar provider add-on for Suntimes.
Periodical
一款月经追踪日历，并依据“Ogino-Knaus”法计算易受孕期
0x54ask
Todo.txt manager. Offline, works with Syncthing. Fork of SimpleTask Cloudless
Birthday Adapter
See birthdays and other events from your contacts in your calendar.
Linwood Flow Nightly
Feature rich event, group and time management system
MinCal Widget
Minimal Calendar Widget
Orgzly Revived
Outliner for taking notes and managing to-do lists in Org-mode format
Stochastic Reminder
Fixed and random reminder scheduler.
StudiPassau
Access to the Online Portal for Students at the University of Passau
MA Calendar
The only fully-functional open-source calendar app with Material You.
Etar - 开源日历
Etar 是遵循质感设计的开源日历，适用于所有人！
Mushotoku
A private, fully-offline productivity app for focusing on what matters
Axichat
用一个应用替代邮件、消息和日历。
Autasker
A simple but robust task manager available on Android, Windows and Linux.
Concert Diary
Concert Diary recreates a personal diary for concerts and festivals.
Roto
Offline rota and shift viewer with today/tomorrow focus, widget, zero tracking.
通知日历同步
通过监听来自工作和社交APP的通知，将事件登记到您的日历中。
Birthday Countdown
An App counting down to your next birthday!
Hebrew Calendar
Biblical feast days, sabbaths, and moon phases on a lunar calendar
Date-a-base
Your Personal Assistant for Every Special Occasion.
Persian Calendar
Android Persian Calendar
EteSync - Secure Data Sync
Secure, private and end-to-end encrypted calendar, contacts and tasks sync
放假日
See when you’re free — Vacation Days helps you keep track of your days off.
ICSx⁵
订阅Webcal（.ics）日历
