Local Webserver

I was just wondering which applications you guys use to test out PHP on your local server?

I normally use IIS in production, but until now I've just used XAMPP on my local machine as it's a fast way to get things up and running.

Do any of you use IIS on a local machine for dev work?

It's not often at all that I use IIS. If I have any doubts at all I will host it on one of my spare addresses. XAMPP is pretty handy.

I've just tried out WAMP (very much like XAMPP) and that's pretty good, I'll probably be using this on my local machine as it's easier to control than IIS. Then I'll be using IIS once I move the code to the main dev server.