Time is money, as goes an old saying, therefore you need to manage it very well. This then calls for proper planning of your daily schedule, future events, appointments, and several other daily activities.
But you can’t keep all your plans in mind, I guess no, at least a few but not all. So you need to have certain things around you to always keep reminding you of what you want to do, the people you are hoping to meet, events you plan to attend and many more.
You can only achieve this efficiently and flexibly by using a calendar application, especially on your Linux desktop. In this article, we shall walk through a brief review of some of the best calendar applications that can help us plan and manage our daily lives.
1. Korganizer
KOrganizer is a constituent of the powerful Kontact integrated information manager on KDE desktop, for purpose of calendar and scheduling. It comprehensively features rich, some of its notable features include:
- Supports multiple calendars and todo lists
- Supports attachment of events and todos
- Quick event and todo entry
- Undo and redo functions
- Alarm notifications
- Todo integration with agenda view
- Plugin for Jewish calendar dates
- Kontact integration
- Highly customizable
- Supports web export plus so much more

Visit Homepage: https://userbase.kde.org/KOrganizer
2. Evolution
Evolution is a comprehensive personal information management software for the GNOME desktop. Its components include a calendar and address book plus a mail client. It can also work on several other desktop environments including Cinnamon, MATE, and KDE.
As an integrated software, it comes with several remarkable features, but for calendar functionality, it offers the following features:
- Allows adding, editing and deleting of appointments
- Supports customization of calendar layout
- Supports reminders for appointments and events
- Enables sorting and organizing of calendars
- Supports sending of invitations by email
- Supports sharing of calendar information
- Enables classification of appointments and vital tasks on groupware servers

Visit Homepage: https://wiki.gnome.org/Apps/Evolution
3. California
California is a simple, modern and relatively new calendar app for the GNOME 3 desktop environment. It enables users to easily handle their online calendars with a modern user interface.
Being a new application, it has yet a handful of features and these include:
- Built on the Evolution Data Server (EDS) for all backend calendar functionality
- Simple to setup
- Quick and easy to use
- Modern GUI

Visit Homepage: https://wiki.gnome.org/Apps/California
4. Day Planner
Day planner is a free and open-source calendar app developed for Linux users to easily plan and manage their time, in terms of handling appointments, events and so much more.
It also offers some brilliant features and these are:
- Displays remainders
- Intuitive GUI
- Simple to use
- Available in several international languages
- Includes a separate synchronization server, therefore, users can synchronize a day planner from any location

Visit Homepage: http://www.day-planner.org
5. Lightning (Thunderbird Extension)
Lightning is an extension for the popular Mozilla Thunderbird email client, it enables users to easily organize their schedule and events. You can download it from the Mozilla website or search for it under Thunderbird extensions and install it.
Its features include:
- Supports multiple calendars
- Enables users to create todo lists
- Supports entry for events
- It also enables users to subscribe to public calendars and many more.
Visit Homepage: https://addons.mozilla.org/en-US/thunderbird/addon/lightning/
6. Calcurse
Calcurse is a simple yet powerful text-based calendar and organizer that you can also use on Linux, especially if you spend a great deal of your time on the command line.
It enables users to keep track of all daily activities that they want to perform, plans, appointments and future events that they want to accomplish, fulfill and attend.
It offers some great and remarkable features and these include:
- Configurable notification system as a reminder of future events, capable of sending mails and beyond
- Highly customizable curses interface to meet a user’s needs
- Supports numerous kinds of appointments and todos
- Highly configurable key bindings
- Support for importing iCalender format files
- Support for UTF-8
- Support for exporting to several formats including iCalender and pcal
- Offers an impressive non-interactive command line that supports scripts
- Also supports running scripts while loading or saving data plus many more

Visit Homepage: http://calcurse.org
7. Osmo
Osmo is a GTK based personal organizer that comes with a calendar, tasks manager, date calculator, address book and notes modules. It was designed to be a lightweight, easy to use and perfect looking PIM tool that will help you to manage personal information in a plain XML database.

In this brief review, we covered some of the best calendar apps that you can install on your Linux desktop to help you efficiently plan and manage your daily schedule and events, plus so much more in relation to time management.
Is there any calendar app with some remarkable components missing in the list above, then give us feedback through the comment section below.
Hi, is there any calendar client that could send an email with my daily agenda?
Gnome California is not available for Fedora 31 any more. why?
According to their Gitlab, California is no longer under active development.
Gnome needs to REMOVE dead applications from their site. But then again, if they did, people might decide to use a BETTER desktop rather than Gnome.
I use Osmo.
Light and GTK+
@dagsoftware,
Thanks for notifying about Osmo personal organizer tool, included in the article…