OrgCalendar is described as 'A fully-functional scheduling WEB-application. The easy way for any organization to have a Internet-calendar within minutes! You simply place the OrgCalendar onto a your web site - and that's it. Calendar management is implemented at two levels: Admin Area and Public Area' and is an website in the Office & Productivity category. There are more than 25 alternatives to OrgCalendar, not only websites but also apps for a variety of platforms, including Windows, Linux, iPhone and Mac. The best alternative is Google Calendar, which is free. Other great sites and apps similar to OrgCalendar are Microsoft Office Outlook (Paid), Simple Calendar (Freemium, Open Source), Rainlendar (Freemium) and Morgen (previously MineTime) (Paid).
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.
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.
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.
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.
Password Encrypted Calendar: Calendar Lock PEA - Displays iCalendars that are plaintext only in RAM, but otherwise always encrypted on the device. - Uses autheticated encryption and a memory-hard key derivation function for the password.
BORG is a combination calendar and task tracking system. The calendar supports all sorts of appointments and also a simple todo list. The calendar functionality is similar to that of other PIMs, such as Microsoft Outlook, Mozilla Calendar, Palm Desktop, Yahoo Calendar, etc...