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Kontact - KOrganizer

KOrganizer is the calendar and scheduling component of Kontact, the integrated personal information…

20 Alternatives To Kontact - KOrganizer

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Apple Mail

There’s big news attached.

BusyCal

powerful calendar app for macOS

CalenGoo

Features | 1.0.175 for Android™
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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.

EssentialPIM

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

Etar

Material design open source calendar for Android.
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GNOME Calendar

GNOME Calendar is a simple and beautiful calendar application designed to perfectly fit the GNOME…
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Google Calendar

Spend less time managing your day & more time enjoying it

Kolab Community

Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.

Kontact

Kontact is the integrated Personal Information Manager of KDE.

Lightning Calendar

Organize your life — it’s about time!

Mailpile

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

Org mode

Org: an Emacs Mode for Notes, Planning, and Authoring
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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…

VueMinder Calendar

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

Xandaro

Free scheduling software for spas, hair & beauty salons. Best online booking & calendar app. 100% FREE salon software. Try it Now!

aCalendar

TAPIRapps. aCalendar and aCalendar+ for Android. The fastest Android calendar.

fruux

Free service that takes care of your contacts, calendars and more so you don’t have to.