30 Boxes

30 Boxes is almost certainly the easiest way to maintain your calendar and share all or parts of it with friends.

20 Alternatives To 30 Boxes

images/2020/04/BORG-Calendar.png}}

BORG Calendar

BORG is a combination calendar and task tracking system.

CalenGoo

Features | 1.0.175 for Android™
images/2020/04/Calendar-Lock-PEA.png}}

Calendar Lock PEA

Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM.
images/2020/04/Desktop-Calendar.png}}

Desktop Calendar

Keep a nice, transparent calender on the desktop. Double-click on a day to enter a description.

Etar

Material design open source calendar for Android.
images/2020/04/FCorp-My-Calendar.png}}

FCorp My Calendar

Manage diary/note, schedule, todo, birthday, etc.
images/2020/04/GMinder.png}}

GMinder

GMinder is an open source Windows System Tray app that pops up to remind you about Google Calendar events.

Lightning Calendar

Organize your life — it’s about time!
images/2020/04/Outlook.png}}

Outlook

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Rainlendar

Rainlendar - Customizable desktop calendar

Simple Calendar

A simple calendar with events (optional recurring and reminders), week numbers and a customizable…

UKs Kalender

This program helps you organizing your dates and tasks and reminds you of upcoming events.

VueMinder Calendar

Take control of your schedule and get reminded wherever and however you want.