What are some alternatives?
When comparing WinAutomation and AutoIt, you can also consider the following products
AutoHotkey - Free keyboard macro program. Supports hotkeys for keyboard, mouse, and joystick. Can expand abbreviations as you type them (AutoText).
Automation Anywhere - Automation Anywhere Premier Revolutionizing automation software New Version: Supports Windows 8
Sikuli - Sikuli Script
TinyTask - TinyTask provides quick and easy automation by recording-playback.
UiPath - UiPath RPA is a high-level platform dedicated to providing seamless automation of data entry on any web form & desktop application.
Hammerspoon - This is a tool for powerful automation of OS X.