InstantTimeZone

Skinny clock is a freeware utility allowing you to display current time on your desktop. You can customize taskbar clock as well.

TimeLeft - tons of things in one program: reminder, clock, countdown, Windows tray clock, timer, eBay auction watch, stopwatch and more. TimeLeft is user-friendly and highly customizable - find plenty of ways organizing important events of your life!

Desktop Clock is a digital desktop clock that displays time, date, calendar and reminder. It is built into your computer and is completely customizable to your tastes. Desktop Clock can be used for deenergizing the computer in given time.

This program lets your computer remind you of important dates and events. It uses Microsoft® Agent to show a talking animated alarm. It also plays any sound, opens files, runs programs, send and includes a snooze button. Very flexible scheduling

Replacement of Windows tray clock, support Winamp skins