Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
TIMEBOX - An advanced timer for professional meeting facilitators
SnapTimer - SnapTimer is a simple, free, portable countdown timer for Windows.
Online Alarm Kur - Free online alarm clock, set alarm easily on your computer using the internet alarm clock without downloading any software, wake up in time with the loud online alarm clock.
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows
TimeMe - TimeMe is a multi-functional timer designed for sports training and workouts, cooking, school breaks, and coffee breaks.