https://geoext.blogspot.com/2009/11/beta-of-geoext-ux-streetviewpanel.html?showComment=1271310623755
GeoExt: Beta of the GeoExt UX: StreetViewPanel
If you want to integrate Google StreetView within your GeoExt application, the StreetViewPanel can be of interest. A demo can be found here ...
of thebetaux