The app's essential features:
Fast and easy
Just enter a name into the search bar, choose a country and select the 'search' button
Share every search result via Facebook, Twitter or email with friends
Direct Call & SMS
Call or send an SMS directly from the app (currently available in AT, DE, ES and in the USA)
Add contact details and telephone numbers directly to your own contacts
Search from Contacts
Find out more about one of your contacts with the feature 'My contacts'
File individual search results in order to read them later via Instapaper or Read It Later/Pocket
The 123people app is free of charge and currently available in 7 different languages (English, German, French, Italian, Dutch, Spanish, and Polish).