Simple Calendar is described as 'A simple calendar with optional CalDAV synchronization. You can easily create recurring events and setup reminders, it can also display week numbers' and is a Calendar in the Office & Productivity category. There are more than 50 alternatives to Simple Calendar for a variety of platforms, including Online / Web-based, Windows, Linux, Android and iPhone. The best alternative is Google Calendar, which is free. Other great apps like Simple Calendar are Calendar Lock PEA (Free, Open Source), Etar (Free, Open Source), Microsoft Mail and Calendar (Free) and Lightning Calendar (Free, Open Source).
With Google Calendar, its easy to keep track of all your lifes important events in one place. You can add events and send invitations effortlessly, share your schedule with friends and family, and search for events you might enjoy.
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.
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 run it on all major operating systems: Windows, Linux and Mac OS X.
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 all your calendars in a single window or choose to see only the calendars you want.
Morgen is a modern and multi-platform calendar application. It connects to several calendar providers (including Google Calendar, Microsoft Exchange, Outlook.com, iCloud) and provide advanced scheduling features powered by Artificial Intelligence.