Country code: +41
Official Swisscom White Pages telephone directories for Switzerland (and Liechtenstein). Includes reverse search. Also in Italian, German and French.
Official Swisscom Yellow Pages for Switzerland (and Liechtenstein). Search by name, classification, keyword etc. Click on advanced search for reverse search and other searches.
Fast and simple White Pages directory for Switzerland. Includes reverse search.
Business directory for Switzerland. In German. Type in the product, brand, company or keyword, Firma, Produkt, Marke oder Stichwort - then click on Suchen to search. Doesn't seem to work in Chrome but in other browsers the search works - you will need to scroll down past the adverts to see the results.