dbus-list-names

dbus-list-names is a compiled Lisp function in `dbus.el'.

(dbus-list-names BUS)

Return the service names registered at D-Bus BUS.
The result is a list of strings, which is `nil' when there are no
registered service names at all. Well known names are strings
like "org.freedesktop.DBus". Names starting with ":" are
unique names for services.