Launching Next has discovered 3 phone book startups.
Internet Phone Book - Find Phone Numbers and Search Businesses Switchboard
Find business and people in Switchboard white and yellow pages directory.
Yellow Pages Online, Phone Book & Business Directory DexKnows
Find local business listings, driving directions, maps, people and local information at DexKnows.com.
White Pages People Finder - AnyWho
AnyWho is a free service that allows you to search the White Pages by name, or, enter a phone number and find out who owns it using reverse phone lookup.