Osmo is a handy personal organizer, which includes calendar, tasks manager, address book and notes modules. It was designed to be a small, easy to use and good looking PIM tool to help to manage personal information.




Merkuro Calendar is described as 'Merkuro is a calendar and contact application that allows you to manage your tasks, events and contacts. Merkuro supports both local calendars as well as a multitude of online calendars: Nextcloud, Google® Calendar, Outlook®, Caldav, and many more' and is a todo list manager in the office & productivity category. There are more than 100 alternatives to Merkuro Calendar for a variety of platforms, including Mac, iPhone, Windows, Linux and Android apps. The best Merkuro Calendar alternative is Google Calendar. It's not free, so if you're looking for a free alternative, you could try Google Calendar or Fossify Calendar. Other great apps like Merkuro Calendar are Proton Calendar, Tasks.org, Tuta Calendar and Planify.
Osmo is a handy personal organizer, which includes calendar, tasks manager, address book and notes modules. It was designed to be a small, easy to use and good looking PIM tool to help to manage personal information.




It provides management of events and tasks, alarm notification, web export, network transparent handling of data, group scheduling, import and export of calendar files and more. It is able to work together with a wide variety of calendaring services, including NextCloud, Kolab...





Put your most important task or goal in the menu bar. Its presence there will help remind you without being annoying.


GNOME Calendar is a simple and beautiful calendar application designed to perfectly fit the GNOME desktop. By reusing the components which the GNOME desktop is build on, Calendar nicely integrates with the GNOME ecosystem.




Own your time with Calendars by Readdle across all your Apple devices – Mac, iPhone, iPad, and Apple Watch.




qOrganizer is a general organizer that includes a calendar with schedule,reminders,journal/notes for every day, to-do list.



CalenGoo gives you a fast and easy way to access and change your Google Calendar (or Google Apps Calendar) with your Android device. It can either work with the built-in calendar or it can sync directly with Google.




Orage is a new modern calendar application for the Xfce Desktop Environment. Orage has been designed from the start to be quick and easy-to-use. Its user interface is clean and intuitive, and does not include any confusing or useless options.

