SilentRun is a small and handy Windows system software tool that can easily let you run multiple programs silently in the background. It can hide program windows and interfaces, and increase or decrease the priority of background processes. For some programs with sound output, SilentRun can also mute the program then run it silently in the background.
SilentRun has a simple interface and is very easy to use. To run a program silently, simply drag the selection box in the upper left corner of the SilentRun window to the title bar or the window of the program that needs to be run silently. You will see the program is selected by SilentRun and a thumbnail of the program would be displayed in the preview area. (Some applications use the non-standard GUI and that might be displayed as a solid black square). After that, you can select the background silent running priority (the default is the "Normal" priority) under the preview area, and set whether to mute the sound output, and finally click the "Hide It" button. You can repeat the above steps to let multiple programs run silently in the background.