ExportListView

From Wikipedia

With the link "Export“ at the list view you can start exporting the addresses depending on the current filtering, as download on your hard drive in various formats. This refers the current listing. E.g. you can read and modify the exported lists in CSV-format with with a kind of spradsheet programm like StarOffice, OpenOffice or Microsoft Office. Most address books are able to import CSV-format.

You can create vCards for external contacts with the related button in detail view (modify form).