Unsanity is a Mac OS X

Mac OS X

Mac OS X is a series of Unix-based operating systems and graphical user interfaces developed, marketed, and sold by Apple Inc. Since 2002, has been included with all new Macintosh computer systems...

 shareware software developer founded in May 2000, notable for coining the term "haxie

Haxie

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 software...

".

Their most popular software includes ShapeShifter

ShapeShifter

ShapeShifter is an Application Enhancer plugin for Mac OS X developed by Unsanity that allows the user to make system-wide modifications to the appearance of the operating system's graphical interface by applying GUI skins through “injection” into running code and without modifying system files,...

 and WindowShade

WindowShade

WindowShade was a control panel for the Mac OS that allowed a user to double-click a window's title bar to "roll up" the window like a windowshade...

, utilising their freeware Application Enhancer

Application Enhancer

Application Enhancer is a software program released by Unsanity for Apple's Mac OS X operating system. Application Enhancer provides a framework that allows third-party developers to write "haxies" for OS X. It also provides a daemon to load haxies when certain applications are launched. These...

module. On February 24, 2008, beta versions of some of their major products were introduced which were compatible with Leopard, bringing Leopard compatibility to their product line for the first time after a long wait of over three months since the introduction of Leopard.

The introduction of Leopard initially lead to negative publicity for Unsanity, as many users with old versions of Application Enhancer installed suffered system crashes upon upgrading to Leopard . Many also believe that Apple actively tries to prevent third party applications from modifying the user interface in order to maintain control over the consistency of the product's appearance .