XNote Stopwatch - Try the most feature-rich stopwatch and timer software on the net for free!
Timer Tab - Online countdown timer, alarm clock, and stopwatch.
Gestimer - For those little reminders during the day
Stopwatch - yeahit - Minimal stopwatch
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.
SnapTimer - SnapTimer is a simple, free, portable countdown timer for Windows.