Rainlendar Lite and Rainlendar Proįor users’ convenience, Rainlendar is distributed in two editions, a Lite version that includes a decent amount of features useful for any normal Linux user, and a Pro edition that adds advanced features, such as support for network shared calendars, support for Google Calendar and Google Tasks, support for Remember the Milk, Toodledo support, the ability to export calendars to the CSV format, as well as to import them from CSV files, CalDAV and iCal support. It is standards-compliant calendar app that stores its data in the iCalendar format, according to RFC-2445. In addition to events, the application also supports tasks, which are kept in separate lists. It is also possible to use Rainlendar with other calendar applications, as it’s an Unicode application and supports localizations. Key features include support for different events types with different appearances, transparency, built-in todo-list, the ability to synchronize events between several clients, as well as to display the current date in the tray icon, Outlook's appointments and an alarm when an event is due. The Pro edition of Rainlendar includes all the missing features from the Lite edition, but it is not free. Rainlendar Pro is a commercial, highly-customizable, lightweight and feature rich desktop widget designed from the ground up to act as a standalone calendar that is easy-to-use and doesn't take much space on your open-source desktop environment.