I've been developing Windows desktop software for years. The largest application I currently maintain is SCAR Divi, a macroing application used to automate repetitive tasks on computers by analyzing visual content displayed by the computer and emulating user input. Other applications I developed include the Caderno syntax text editor and the HttpBox webserver.
My experience in this field is quite extensive as I have a firm grasp of the Win32 API and many different programming languages including Java, Delphi, PHP, Ruby, C# and many more.
All of the software I develop is 100% free to use and does not contain any malware products, with the development supported by donations from users and advertising.