Atomic Alarm Clock
Alert yourself about important events with different alarms and replace your Windows tray clock using different skins. Computer alarm clock that will play a MP3 file. It also can run a program, log off, reboot, shut down, or power off. Atomic Alarm Clock also an atomic-time synchronizer and... This computer alarm clock is built into your personal PC and is completely customizable. ... Nice Computer Alarm Clock! ... Support Longhorn clock style. ... See the time, seconds, day, date and system UpTime in different skins.
http://www.drive-software.com/download/ataclock.zip - 1Mb - Download - Screenshot

PC Alarm Clock
PC Alarm Clock is a program that can make your computer to work just like an alarm clock. This alarm clock, timer and reminder software is loaded with features that will ease you into the beginnings and endings of your day. The multi-alarm can be set for many different wake up times, and you... With the sleep and slumber feature, you can listen to music while falling asleep without the worry of having to turn off the computer, PC Alarm Clock will play MP3 songs and music with fade out effect and automatically shuts off your computer.
http://www.coyee.com/pacsetup.exe - 751Kb - Download - Screenshot

Chronos Clock
Do you need to keep track of time around the world, if so Chronos Clock will solve your problem. Chronos Clock, the desktop clock that is able to display multiple clocks and different time zones. Chronos Clock is simple to install and easy to use. If you need to know the time in other countries... Each alarm can display an Alert message, play an alarm sound, play a CD, and run another program or power off the PC. ... * Internet time synchronization using NTP/SNTP time-servers, to keep your PC's clock right up to date.
http://dl.filekicker.com/send/file/156865-1P80/chronos.zip - 2Mb - Download - Screenshot

WakeMeUp!
WakeMeUp! is an advanced alarm clock software for PCs with Windows 2000/XP/2003srv OS installed. For now, all PC alarm clocks rely either on Windows Task Scheduler or their own timers and work only when they are running. WakeMeUp! implements a much more convenient approach. ... can be used as an alarm clock with almost unlimited abilities, a simple and very reliable reminder. ... It will automatically increase volume to max and make some beeps through PC speaker if your loudspeakers are turned off.
http://www.highspheres.com/downloads/wakemeup.exe - 3Mb - Download - Screenshot

MP3 PC Alarm Clock
MP3 PC Alarm Clock is a program that can make your computer to worked just like an alarm clock. This computer alarm clock software is loaded with features that will ease you into the beginnings and endings of your day. The multi-alarm can be set for many different wake-up times, and you have the... Using the sleep and slumber feature, you can listen to music while falling asleep without the worry of having to turn off the computer. ... With the sleep/slumber feature, you can listen to music while falling asleep without the worry of having to turn off the radio.
http://www.coyee.com/pasetup.exe - 642Kb - Download - Screenshot

Alarm Clock
This program is a customizable alarm clock. It allows you to set a different alarm for each day of the week as well as disable the alarm for that day. The alarm sound can be set to any . wav sound of your choice. The display is large and easy to read as well as fully customizable. ... This program also allows you to synchronize your PC with a wide variety of atomic clock servers. ... The date can be displayed in a wide variety of formats and the time can be displayed in either 12 or 24 hour formats.
http://www.workhorsegames.com/Alarm.zip - 3Mb - Download - Screenshot

Alarm Timer
Alarm Timer is an alarm clock on PC. If your need alarm on your trip, you can use your PC as an alram clock.
http://www.woodensoldier.info/en/soft/AlarmTimer.htm - 54Kb - Download - Screenshot

Parallaxis Cuckoo Clock
Computers can be boring and mundane, why not spice it up a bit, with a new Cuckoo Clock. There is a lot of breathtaking graphics on Cuckoo Clock - classical clock, futuristic clock, office clock, even Big Ben is included! This program is all your timekeeping needs in one package: see the time... This software makes a refreshing change to the normal mundane PC clock, why not try it yourself. ... Customize alarm/clock sounds and messages. ... Download a lot of free themes, skins and collection.
http://www.pxcompany.com/download/cuckoo/cuckoo_en.exe - 2Mb - Download - Screenshot

Computer Alarm Clock
With this Computer Alarm Clock software, you can give yourself reminders of important events that happen throughout the day, or wake up/fall asleep by listening your favorite music. It is an alarm clock that is built into your personal PC and is completely customizable to your tastes. ... There is also a gentle wake up feature that allows you to be slowly awakened (Fall asleep) by the alarm sound gradually getting louder or smaller, instead of being jerked awake by the loud buzzing of a traditional alarm.
http://www.tarsoft.com/ca_setup.exe - 775Kb - Download - Screenshot

Alarm Reminder eBay Edition
Never miss another eBay auction when you "bid late, buy low". Bidding near the end of an auction is a good way to ensure you pay the lowest price possible - Alarm Reminder eBay Edition is a fully functional yet lightweight tool that reminds you of the bids you wish to make. ... Or use it as a normal alarm clock too. ... Never miss another TV show, appointment, planned phone call, meeting or important date, whilst working at your PC. ... Be reminded by an onscreen message, flashing screen, alarm sound or music file.
http://www.trulabs.com/AlarmReminderEbay.exe - 2Mb - Download - Screenshot