TimeLeft - TimeLeft is a versatile desktop utility - it can be used as a countdown clock, reminder, clock...
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
CountDown Kings Free Countdown Timer - CountDown Kings Free Countdown Timer is a free countdown timer for Mac OS X and Windows operating systems.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Free Timer - Free Timer is a fully featured countdown timer for the Windows operating system by using which you can easily set the countdown timers to get the information of remaining time.
LightShot - The fastest way to take a customizable screenshot.