ScanTailor - Scan Tailor is an interactive post-processing tool for scanned pages.
Tiny Scanner - Fast and easy to use mobile document scanner.
Book Scan Wizard - A utility to help with Book scanning using cameras as a scanner.
TurboScanner HD - TurboScanner HD is an app for iOS that enables you to convert the iPad or iPhone into a useful scanner and also serves as small fax or air printer in your pocket.
PDF Scissors - Crop pdf. Drop margin, whitespace. Auto crop all pages. Easy feature to make nice cropped pdf for ebook readers such as Amazon Kindle, Sony, Cybook etc.
DocScan - DocScan is a PDF document scanner application for the iPhone smartphones that lets the users to scan their documents and get them in the PDF files.