GetAccept - GetAccept is a Sales tool for electronic signatures and sales document automation.

Docr - Docr is a free app for the iPhone smartphones that lets its users scan all of their documents into sharp images and, in the end, store them as PDF files.

Signaturely - Super simple eSignature software

Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.

SignEasy for Gmail - Sign documents or collect signatures directly within Gmail

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.