This is a simple and effective tool to keep track of time. It is a multifunctional digital countdown timer that measures in hours, minutes and seconds. Time can range from 1 second up to 99 hours. It can play a wave file when finished and an alert when almost finished. The On Finish option allows you to easily execute any program when finished.
ionTimer has 2 timer modes

StopWatch
Egg Timer
and also supports a meeting timer in Egg Timer Mode.
Key Features
When the time expires it can sound a warnings signal and/or run an external application.

Ability to save and load a time counting session
Ability to play a warning When a certain amount of time is left
Meeting Timer with Speaker Coutdown
Repeat Play repeats the sound until you click finish
Ability to change the Font, Color and Size to meet specific needs
Modes
Transparent Full Screen - Creates a transparent text timer that is always in front of other applications.

Transparent Mode - Turns the main application timer transparent
Minimized Mode - Creates an icon in the lower left hand System Tray which displays the time in a Balloon Tip
Always on Top - Keeps the main timer window always in front of other applications.