AutoHotkey - The ultimate automation scripting language for Windows.
Timer Tab - Online countdown timer, alarm clock, and stopwatch.
Pulover’s Macro Creator - Pulover’s Macro Creator is a Free Automation Tool and Script Generator.
Online timer - Online timer is a free and easy-to-use tool that comes with a very simple way to get done with measuring time and alarm.
AutoKey - A Python 3 port of AutoKey, the desktop automation utility for Linux and X11.
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.