Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Timer Tab - Online countdown timer, alarm clock, and stopwatch.
SnapTimer - SnapTimer is a simple, free, portable countdown timer for Windows.
Online timer - Online timer is a free and easy-to-use tool that comes with a very simple way to get done with measuring time and alarm.
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows
Online Stopwatch - Online Stopwatch is free to use online tool that allows you to keep track of the important events and tasks that you are performing.