CLOX 2000
Analog and digital clocks for the internet user of the 21st century, CLOX 2000 harnesses the power of the internet to bring the current time from all over the world to your desktop. It also works without an internet connection if you prefer. Features and free plugin accessories include analogue... The result is a solid, reliable software product in which every detail has been carefully thought out and implemented to the highest levels of user-friendliness. ... The free version does not expire after a certain length of time but the $10.
http://www.e-artery.com/mavm/CLOX2000.exe - 2Mb - Download - Screenshot

QualityTime
Quality Time parental control software solves all of those arguments about computer usage in the home. Now you can limit usage to particular times of the day, and limit individuals to an amount of time within those periods, without having to have an argument. ... When a user's time is up, the software pops back on top, and prevents them from running any programs. ... Quality Time is now available in German and English, and will speak configurable warnings at 5 minutes and one minute before time runs out, using Microsoft Agent Technology.
http://www.wieser-software.com/qualtime/qualtime.exe?216.32.71.18.exe - 374Kb - Download - Screenshot

Aye Shutdown
Aye Shutdown is a multi-function software that automatically executes tasks at pre-defined time. It has many timer options to meet the user's needs on different occasions. Specifically, it can synchronize your PC's time to atomic clock servers, turn off/lock/reboot/logoff the computer, turn off...
http://www.ayesoftware.com/asd/asd.zip - 1Mb - 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

Aye Time Switch Pro
AYE Time Switch Pro is a multi-function software that automatically executes programs at pre-defined time. It has many timer options to meet the user's needs on different occasions. Specifically, it can synchronize your PC's time to atomic clock servers, turn off/reboot/logoff the computer, turn... Furthermore, it contains a decoding program for audio files, which enables a user to play music of almost all formats without a third program.
http://www.ayesoftware.com/download/ats.zip - 994Kb - 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. ... This feature will play MP3 songs and music with fade out effect and automatically shuts off your computer.
http://www.coyee.com/pasetup.exe - 642Kb - Download - Screenshot

4D Keeper
4D Keeper is developed for automatic synchronization with exact-time servers. It is one of the simplest and handiest time-synchronizers for Windows ever made. The program helps to be sure of your PC clock accuracy. With just two buttons, you will be able to detect whether your Windows clock... The main features of the program include PC clock synchronization with the exact-time servers (including NIST time servers), automatic switch from one time server to another in case of unavailability, color schemes support (including the ability to create and to edit them), and transparency support.
http://4DKeeper.com/4DKeeper.exe - 1Mb - Download - Screenshot

Time Station
Time calculator and spreadsheet, graph, saving and export to csv, MySQL and html. Serial port access, auto logging. No timer limit, precision of 1, 10 or 100 milliseconds, software calibration. Simple entering of time values, auto correct function, conversion between time format and different... Calculations: Addition (multiple values of the same type), Subtraction (multiple values of the same type), Multiplication (2 values: time*float, float*float), Division (2 values: time/time, time/float, float/float), Conversion (time=>float, float=>time; units: y, d, h, m, s, ms), Average...
http://www.timestation.dataflower.net/downloads/TS_11.zip - 4Mb - Download - Screenshot

Lullaby
Do you fall asleep having switched on a movie or music at computer? And after some minutes you find out that the sound background prevents you from sinking into sleep. The remote control is not foreseen, to get up from bed - means to lose the accumulated warmth and drowsiness. ... Try Lullaby - activate the timer to the convenient time and the software will gradually reduce the volume level till zero within this time, then it will turn the computer into sleep mode or switch it off. ... Features: alarm clock, command line parameters.
http://lullaby.nevoin.com/lullaby.zip - 247Kb - Download - Screenshot

Global Time Synchronizer
Magneto Software Global Time Synchronizer is a versatile time keeping tool that has many features including the ability to modify the look of your standard desktop clock, an easy-to-use, convenient interface that uses skins to modify its appearance, and many other unique options. ... - Can be made transparent to not interfere with your daily activities - Displays calendar - Displays time in multiple time zones simultaneously and can keep track of time in different cities simultaneously as well.
http://www.magnetosoft.com/downloads/maclocksetup.exe - 3Mb - Download - Screenshot