Wren - Offset your carbon footprint by saving rainforests
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.
YAYZY - Track the carbon footprint of each purchase in real-time
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
Klima - Go carbon neutral
Genius Scan - On The Go.