Attache Transparent Clock
Transparent desktop clock with fully customizable shape, alarms, and atomic time. It may have a digital or analog clock face of various colors, sizes and shapes - you may even set individual parameters for each application you run, so that the clock were clearly visible in any environment. ... This state-of-the-art piece of software may be used as a beautiful replacement for standard Windows digital clock or as an alarm-clock/reminder, to help you stop forgetting your friends' birthdays and other important but not so easy to memorize events.
http://www.softdemon.com/attclock.zip - 1Mb - Download - Screenshot

The Time Machine
Professional looking clocks, skinable calendar, atomic synchronizer and organizer. The Time Machine is a massive set of components and functions, completely covering all the tasks of managing your computer clocks. That includes managing appearance of clocks, display of various time zones,... - Highly customizable digital and analog clocks with a powerful skin engine; - Integration of the clocks in a Windows environment.
http://www.atlantsoft.com/utils/store/ttmsetup.zip - 4Mb - Download - Screenshot

Tipsy Clock Screensaver
Tipsy Clock Screensaver is a skinnable digital clock, which randomly and smoothly moves across the screen. You can write your own text message which will run as a ticker. A synchronization function will set your PC clock to atomic time via the Internet.
http://www.cool-screensavers.com/download/tclock.exe - 1Mb - Download - Screenshot

AMI Ultimate Screen Clock
Integrate a sophisticated digital or analog clock with your Windows desktop, schedule reminders and other tasks up to a century in advance, keep your system clock accurate with an Internet atomic time server and display your clock as a Windows screen saver. ... Among its many talents, AMI Ultimate Screen Clock will sound nautical watch bells, tell you the time with an authentic cold-war era Soviet submarine clock, play your favorite tunes every day just after lunch, blank your screen with an orbiting digital clock made of neon tubes and much more.
ftp://www.mindworkshop.org/pub/.mindworks/UltimateScreenClock.exe - 3Mb - Download - Screenshot

DS Clock
DS Clock is a digital desktop clock that displays variable date, time, and time zone information built from the format string. The program allows you to fully customize its look and feel, and can synchronize your computer's clock with Atomic Time Servers. ... DS Clock also allows you to show a tool tip window with upcoming reminders of Calendarscope and supports Swatch Internet Time and Stopwatches. ... Real Westminster chimes are available. ... You can select any combination of date and time, pick custom colors and fonts, set custom sound to play at the top of the hour, etc.
http://www.dualitysoft.com/download/dsc16r.exe - 869Kb - Download - Screenshot

Horas
With the world becoming more connected, people are following world events, doing business, talking to family, and creating friends internationally. Horas is a world clock that helps you keep track of time in different cities by showing you clocks for multiple time zones. ... Plus, Horas can automatically adjust your computer clock by synchronizing it with atomic clocks. ... There are many options available such as the automatic adjustment of daylight saving changes, Swatch Internet Time support, analog and digital displays, auto-hiding of the clocks, custom date and time formats, custom...
http://www.basta.com/Software/SetupHoras.exe - 1,023Kb - Download - Screenshot

Vorboils
Vorboils is an awesome 3D screen saver. It generates beautiful, random wormholes that wobble, mutate and amaze. Vorboils is highly configurable (currently supports 258 configurable options) and can even run in interactive mode! Vorboils can automatically generate funky wallpapers and... Sync the clock and your PC time to an online atomic clock (accurate to 1 second in 6 millions years)! ... Vorboils can sync your PC time to an on-line atomic clock, accurate to 1 second in 6 million years! ... It can display the current time on a 3D analogue or 2D digital clock both with many wacky...
http://www.boiledsweets.com/vorboils/bin/vorboilsdemo.zip - 8Mb - Download - Screenshot

Round Clock 2005
Atomic alarm clock with digital or round interface. As event reminder it lets you conveniently manage your important dates and times. Supports user-selected skin clock skins in BMP, GIF, JPG, WMF formats, sends e-mail notifications and plays sounds. Includes features: Desktop Clock -... - Trace and calculate running time of some Windows application. ... The results are saved to a text file that can be imported by Excel and analysed. ... - Customize the type of notification: alarm message, playing music, run application, send user-defined e-mail message to specified e-mail addresses.
http://www.ProximaSoftware.com/files/RoundClockSetup.exe - 600Kb - Download - Screenshot

PalmaryClock Wireless Edition for Treo 600/650
PalmaryClock Wireless Edition s not just an improved clock, it is a technological breakthrough. Your Palm can now be not only a powerful organizer but a real-time assistant in your business! Nowadays it is very important to have the latest reliable information, and with the help of PalmaryClock... com) - Currency Converter - Atomic Time Syncronization - Wireless autoupdate - An ability to specify the button to switch on the device and automatically start PalmaryClock. ... Features - Weather Forecast for 1300 cities (provided by AccuWeather.
http://www.palmarysoft.com/products/clock/wireless/PClockW_v10.zip - 2Mb - Download - Screenshot

ClockWise
ClockWise is the ultimate time utility for Windows. Includes a digital clock, time client, calendar, timer, stopwatch, dial-up network timer, scheduler, and reminder system. You can automate everything! You can schedule up to 200 external or built-in events! ... Built-in options include system reboot, shutdown, automatically setting the system time to the atomic clock at NIST or any Internet NTP server, connection or disconnection from the Internet and Active Desktop refresh. ... On-line timer log includes daily, weekly and monthly stats.
http://www.rjsoftware.com/files/CW_330.zip - 761Kb - Download - Screenshot