This JavaScript allows you to see how much time has passed since you were born, or see how long there will be between 2 different dates.
Developer: lawrencegoetz.com Platform: Date upd:2000-01-10 Hits3907 [Visit]

There are 3 scripts included in this package. The first countsdown in minutes to zero and alerts the user / redirects. The second does the same thing but can count down hours as well. The last one contains multiple countdowns which can be setup
Developer: Bespoke Software Solutions Ltd Platform: linux, windows Date upd:2006-08-29 Hits4581 [Download] [Visit]

This is a live, dynamic countdown script that can be set to count down until any given date. Every aspect of the script is configurable - dimensions, background color, text font etc.
Developer: dynamicdrive.com Platform: Date upd:2001-12-18 Hits12092 [Visit]

A javascript countdown function that updates in real time and formats beautifully. It is coded to be almost identical to my PHP Countdown function in usage and format.
Developer: Nathan Bolender Platform: linux, windows, freebsd, osx, sun Date upd:2006-01-09 Hits9460 [Download] [Visit]

This script counts the number of days remaining until any annual occasion on the calendar (ie: birthday, Christmas etc). It automatically detects and adjusts to the present year, and if the specified occasion has already passed this year, it displays the days remaining until
Developer: javascriptkit.com Platform: Date upd:2003-04-14 Hits6344 [Visit]