Basic Stuff is very easy and even advanced programming is possible, as the language is now able to use objects and classes and has a ton of free libraries and one of the most helpful and friendly communities on the Internet.

With a full programming language powering the hotkeys, including GUIs, it is powerful and flexible.

AHK allows full scripts to be created and used, it is very flexible.

You can reprogram any key combination, including the Windows key with a syntax like this one:

h::msgbox true

that automatically remaps the H key to show a message box.

Can interact with any Windows program / dialog / form, filling fields, submitting data, etc., without dependency on the window placement.