CountdownCalendar.net offers a simple and intuitive way to create countdown calendars on the web.
The widget being generated can be customized with different colors; different text can be shown next to the actual count-down counter.
This service is currently free as they don’t charge anything for the count-down creation. The site currently operates on an ad-supported revenue model.
The service was launched in October 2010 but failed to attract significant traffic since then, according to Compete.com. Nevertheless, I find the service effective and the interface intuitive enough to give it a try next time I need one of these count-down timers 🙂