AutoHotkey vs Greenshot (for Windows)

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.

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

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.

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

C-like languages dominate the industry, making it easier to switch over to other ones in the C family.

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

Greenshot is licensed under GPL with source code available on BitBucket.

When you enter a capture mode, the screen content is preserved as it was when you started capturing.

Instead of just capturing the visible portion of the page, this tool can capture all of the page in one image by scrolling through the page, taking images at set points and then stitching the images together.

Pressing the print screen button will allow you to select the captured area.

Easy to use selection tool with a magnifier to select only the part of the screen that you need.