Chameleon Clock offers you the opportunity to have a powerful clock on your desktop, without it using too much of your system resources. It can either be integrated into your system tray, replacing the existing clock; or used as a floating clock, in conjunction with the standard one.

The clock is extremely accurate, as you can synchronise it with various Atomic Clock Servers whenever you wish. It is fully customisable, too, so you can get exactly the features and look you want.

Thousands of skins are available to download, and you can choose to display Julian dates, Swatch internet time and moon phases, along with the standard time.

A calendar can be accessed simply by passing the mouse pointer over the clock, and you can set alarms to notify you of important appointments etc.

Bizarrely, there is even a built-in 'Period Watch' facility for the ladies, with which an alarm can be set to warn when the next period is due.