Background Notification Sound is a free Chrome add-on developed by Safe SA. This add-on allows users to play a notification sound when receiving a message in the background with service worker. It also ensures that Chrome remains running in the background, allowing users to receive messages even if the browser is closed.

With Background Notification Sound, users can stay connected and receive important notifications without having to constantly keep their browser open. The add-on works by playing a notification sound whenever a message is received in the background through service worker technology. This feature ensures that users never miss important updates or messages.

In addition, Background Notification Sound ensures that Chrome remains running in the background, even if the browser is closed. This means that users can receive messages and stay connected without the need to keep their browser open at all times.

Overall, Background Notification Sound is a useful Chrome add-on that enhances the user experience by providing notification sounds for messages received in the background and keeping Chrome running in the background for uninterrupted connectivity.