Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
XNote Stopwatch - Try the most feature-rich stopwatch and timer software on the net for free!
SnapTimer - SnapTimer is a simple, free, portable countdown timer for Windows.
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows
CountDown Kings Free Countdown Timer - CountDown Kings Free Countdown Timer is a free countdown timer for Mac OS X and Windows operating systems.