TimeLeft - TimeLeft is a versatile desktop utility - it can be used as a countdown clock, reminder, clock...
XNote Stopwatch - Try the most feature-rich stopwatch and timer software on the net for free!
Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Stopwatch - A Java countdown timer and stopwatch. Features a fullscreen and a resizable window mode.
Dial - Quick & beautiful macOS timer.
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows