My main project is KOrganizer. Kandy is another
application I'm responsible for (synchronising data on a mobile
phone with the corresponding KDE apps). Recently I rewrote the KDE
addressbook API, and finally I'm still trying to make kdepim a
suite of integrated tools for managing personal data on the desktop
and on mobile devices in a consistent way. The first result of this
is KSync, a generic solution for syncing.