KPilot is part of the KDE project, but must be obtained from either the Official KPilot Home Page (Most official sources and binaries) or the KPilot Bugs Page (development sources and binaries). It is also available from the KDE CVS server under /home/kde/kpilot.
A word about version numbers: KPilot 3.x versions (such as this 3.1.14 version) are for KDE 1. With the release of KDE 2 KPilot 3.x will be obsolete and we will move to KPilot 4, which will have support for some of the new KDE functionality. KPilot 4.x will be available from a different CVS location, but from the same web pages.