Perl

While a am working on my secret project, I found a need for a local developing and testing environment which would provide the functionality of a LAMP stack (a WAMP Stack in my case). I had known about this nifty tool for a while, but had never had a chance to play with it at all. It's called XAMPP - it is essentially a WAMP or LAMP or MAMP stack rolled into ONE pre-configured package that you can run on just about any system.