Taskbar clock replacements

Taskbar clock replacements are utilities which replace the default taskbar clock. A number of such utilities modify the taskbar clock in Windows XP to work in a manner similar to the taskbar clock in Windows Vista.

LClock
LClock is a software application that modifies the style of the Taskbar Clock in Windows XP to that of the "Longhorn" OS (the early version of Windows Vista). It also adds a popup calendar feature. When the software is installed, a new icon named appears on the computer's control panel allowing the user to customise the clock. The look and functionality of the clock can be altered, and a custom alarm and Start button can be enabled on the user's desktop.

LClock is a modified (stripped down) version of Kazuto Sato's TClock Light. LClock is free software distributed under the terms of the GNU General Public License.

1st Clock
1st Clock is a taskbar clock replacement that costs $30 and offers a fully customizable clock display, alarms, atomic time synchronization, popup calendar, time zones and more. 1st Clock is fully compatible with Windows Vista and supports both 32- and 64-bit versions of Windows.
 * 1st Clock Web site

Other

 * Alfaclock
 * Analog Clock
 * ZoneTick - Shows multiple time zones