Hello, There are almost as many methods of trading than there are traders. I suppose that some traders have developed their own software, because they dont have find what they are looking for elsewhere. This Poll is targeted to the traders which have developed their own trading software. I do not ask you which is the secrecy of your system, when you buy and when you sell. But which are the leading functions of your software. What I call leading functions within your software are things like that : Function to import quotes in a data base. Display quotes to a graph. Computes quotes . Interactivity with your broker. Thanks for your time. Daniel2006