The aim of a program like Executor is to make your PC-related tasks easier. With it you can launch programs that are not running, open files and folders, open websites, send emails, do web searches, etc. You can do almost anything you want.
One of the main advantages of Executor is that as you type the name of the program you want to launch in the search bar, it shows you all the possible results. Thus you don't need to sift through the menu or tons of folders. You can also use it to launch any system process instead of using the Run feature in Windows.
Other interesting features include keyboard shortcut management (you can easily assign key combinations for anything), its integration with Windows context menus, and the fact that it uses very few resources.