In my opinion, I think that XPlode takes the cake, and runs off with it and eats it before all the other ones find him... erm... Anyways, I've used both WPI and W.A.I.T and for me XPlode has more functionality than both of those (My opinion only peoples !) and its not that hard to learn simple XML just as what X-Savior stated, just follow the examples, test them, and wallah ! XPlode for me, but otherwise WPI and W.A.I.T are both very good programs aswell