CalendarReview

What Kontact says about itself:

The KDE Kontact Personal Information Management suite unites mature and proven KDE applications under one roof. Thanks to the powerful KParts technology, existing applications are seamlessly integrated into one.

KOrganizer is the calendar and scheduling component of Kontact, the integrated personal information manager of KDE.

KOrganizer provides management of events and tasks, alarm notification, web export, network transparent handling of data, group scheduling, import and export of calendar files and more. It is able to work together with a wide variety of groupware servers, for example Kolab, Open-Xchange, Citadel or OpenGroupware.org.