Alternatives to PreMinder for all platforms with any license

Google Calendar

Multi-platform calendar tool that lets you fill in events with images and map coordinates.

Free Web Android iPhone Chrome OS Android Tablet ... iPad Sunbird Chrome
Material design Data export/import IFTTT integration Reminder for deadlines ... Shared calendars Calendar integration Events Shared calendars Sync across Devices Add a feature

893 Like
Microsoft Office Outlook

Part of the Microsoft Office Suite, Outlook is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

Freemium $ $ $ Mac Windows Web Android iPhone ... Android Tablet Windows Phone iPad Apple Watch Android Wear
Address book integration Built-in Calendar Calendar integration Exchange ... Box.com integration Contacts Custom rules Dropbox integration Email scheduling Exchange Integration Flight Status Gmail integration ICloud Integration Integrated Search Multiple Account support Night mode/Dark Theme Office 365 integration Onedrive integration Organize mails Shared calendars Signature with image Smart attachments Todos Unified inbox Yahoo Integration Add a feature

356 Like
Lightning Calendar

Organize your schedule and events in a calendar fully integrated with Thunderbird or Seamonkey email. .

Free Open Source Mac Windows Linux Thunderbird SeaMonkey
CardDAV CalDAV Task Management Add a feature

173 Like
Rainlendar

Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can...

Freemium Mac Windows Linux
Customizable Sync with Fantastical Apps that Sync with Google Calendar Multiple languages ... Syncs with various services Add a feature

106 Like
Apple Calendar

Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See...

Free Mac iPhone iPad iCloud
Sync with iCloud Week Planner Add a feature

134 Like
Simple Calendar

A simple calendar with optional CalDAV synchronization. You can easily create recurring events and setup reminders, it can also display week numbers. Contains a...

Commercial $ $ $ Open Source Android Android Tablet
Built-in Calendar Customizable Events Notifications ... Support for WebDAV Add a feature

26 Like
MineTime

MineTime is a free, modern and multi-platform calendar application. It connects to several calendar providers (including Google Calendar, Microsoft Exchange and...

Free Mac Windows Linux
Artificial intelligence Calendar integration Exchange Google Calendar integration ... Apps that Sync with Google Calendar Personal-assistant Scheduling Calendar Sync Add a feature

10 Like
Kontact

Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful...

Free Open Source Windows Linux
Contacts Convert Email to Task Feed Reader Add a feature

30 Like
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iRedMail

A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD distributions, with both i386 and x86_64...

Freemium Open Source Linux BSD Self-Hosted
Email Server Add a feature

20 Like
UKs Kalender

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

Free Windows
Planner Add a feature

11 Like