Lightning Calendar is described as 'Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird or Seamonkey email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars' and is a very popular Calendar app in the office & productivity category. There are more than 50 alternatives to Lightning Calendar for a variety of platforms, including Windows, iPhone, Mac, Linux and Web-based apps. The best Lightning Calendar alternative is Google Calendar. It's not free, so if you're looking for a free alternative, you could try Google Calendar or Proton Calendar. Other great apps like Lightning Calendar are Etar, Fantastical, Nextcloud Calendar and Simple Calendar.
Calindori is a touch-friendly calendar application. It has been designed for mobile Linux devices but it can also run on desktop environments. Users of Calindori are able to check previous and future dates and manage tasks and events.
Germany
EU
A stunning and holistic design empowers you to reveal the patterns and rhythms of your life through your digital calendars.
United States
An online calendar application that includes a shared calendar, website plugins, room & facility scheduling, and mobile app.
United States
Calcurse is a calendar and scheduling application for the command line. It helps keep track of events, appointments and everyday tasks. A configurable notification system reminds user of upcoming deadlines, the curses based interface can be customized to suit user needs and a...
Timepage is a smart calendar that makes planning your time and projects smooth and stress-free. It combines your events, maps, contacts and weather into one easy app, working with your existing calendar so you don't need to setup anything new.
Australia
Quickly see the time until your next meeting from any of your calendars. Click on the button to be taken to your calendar.
Solid Calendar is a minimalist calendar app with natural language processing and 6 carefully designed layouts to make staying on top of your schedule a breeze.
California is a calendar built for GNOME 3. It allows you to view and manage your online calendars with a simple and modern interface.
United States
InstaCal is an affordable, yet powerful calendar app that puts all your events right at your fingertips, always available in your Mac's menu bar. InstaCal is quick and convenient, and can be opened at any time with a configurable keyboard shortcut.
United States
Me Calendar is a user-friendly calendar app equipped with widget support. Seamlessly integrate with Google Calendar, Microsoft 365, Outlook.com, iCloud, CalDAV, and WebCAL.
United Kingdom
Merge Calendar is a user friendly scheduling application. It is fully compatible with most digital calendar file formats. It is a great value in comparison to other scheduling applications. It is part of Merge Soft Office.
newDay is an experimental timekeeping and calendar system that helps users to set intentions for each of the ten newHours that comprise a newDay.
