Dial - Quick & beautiful macOS timer.
TimeLeft - TimeLeft is a versatile desktop utility - it can be used as a countdown clock, reminder, clock...
Cuppa - Cuppa is a testing framework for Java.
CountDown Kings Free Countdown Timer - CountDown Kings Free Countdown Timer is a free countdown timer for Mac OS X and Windows operating systems.
wnr - Better than pomodoro, this timer app balances work and rest.
Desktop Countdown Timer - Desktop Countdown Timer is a free to use countdown timer for the desktop environment of the Windows.