What iWiccle employs should be a part of 95% of standard LAMP & WAMP installations. Of all things people have reported, unsupported modules are yet to surface. I'll try and break my own installation and switch everything off when I get a moment, that ought to tell us the minimum dependencies. I usually keep extra modules to a minimum in my dev environment to make sure I don't code anything that requires people to start turning their systems upside down --- most things don't really need that, and sophistry isn't good enough a reason to justify using some of the funkier and less supported functions.