High Quality Content by WIKIPEDIA articles! In computing, a Haxie is a term which was coined by developer Unsanity to describe their products. It is a blend of "hack" and "Mac OS X". Unsanity uses it to refer to "hacks" that are specifically designed for use with its Application Enhancer (APE) software. These are typically small interface and functionality tweaks to the system or existing applications that work by injecting code into programs as they load.