Let me share a secret with you. It is a development tools absolutely free. Do you know illumination software? You can develop your own WSO product with this tool. I want to assure you that I am not affiliated to this site, I have nothing to do with the product itself. I'm just impressed by the quality of the applications we can download (in fact there are eight applications). These applications are free, a donation of a minimum of $20.00 is suggested. I encourage you to give a donation because this is a very good quality software.