calendar

YABI is a simple utility which makes up for iCal’s lack of birthday calendar.

InterCal is a date conversion program and perpetual calendar

Rili is a very simple, tiny calendar

iSync Palm Conduit allows you to use iSync to synchronize contact and calendar

MiniCal is a free, small and simple FileMaker Calendar.

This is an online organizer, group calendar and IM suite.

Generating a calendar containing the numbers of week in iCal

Move Entourage calendar info to web format.