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.
Expensify - Import expenses directly from a credit card to create free expense reports quickly. Approve reports online and reimburse directly to a checking account with one click.
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
Spendesk - Smart spending solution for agile teams
Genius Scan - On The Go.
Abacus - Expenses without the 'expense report'