An icon taskbar for the Gnome Shell. This extension moves the dash into the gnome main panel so that the application launchers and system tray are combined into a single panel, similar to that found in KDE Plasma and Windows 7+. A separate dock is no longer needed for easy access to running and favorited applications.
Why do you think that https://github.com/kgshank/gse-sound-output-device-chooser is a good alternative to dash-to-panel