Scanbot - Scanbot is a mobile app that allows you to use your device's camera as a document scanner. The app is capable of scanning a large number of source materials, and it can handle QR codes as well.
ABBYY Business Card Reader - Scan cards ≡ in a second and manage them everywhere ☁
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
Business Card Maker - Customize Business Card templates online
Genius Scan - On The Go.
MakeBizCards - Easy to use web-app for designing your own business card.