Application Enhancer is a system which allows for 3rd party modules to modify and enhance the way applications behave and operate. Application Enhancers work on an application level, therefore they do not affect the stability of the underlying system. The technology behind Application Enhancer system has been in research and development for more than 1.5 years now, and many Unsanity haxies (including WindowShade X, FruitMenu, Silk and others) are now using it. The software development kit for developing modules is also available on the Application Enhancer home page.
Yes, one may try before buy. As I recall, there are no limitations per-se. All is dependent on honor.
Harv