In Mozilla Firefox, when you click on the hyperlink of a downloadable file, it gives a choice of whether you have to open the file, save the file or cancel the download. However if you try to download EXEs or any other kind of files which Firefox considers as executable files (.MSI) for example, it will only show you a Save button and a Cancel button. There is no option to directly run the executable file. Well, an addon can easily change that. Let us explore it.