Insync - Meet the Insync team that made it possible for users to do more with Google Drive storage on your devices.
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.
ClipCard for Mac - Instant cloud search with a keystroke on your Mac
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
WhoHasAccess - Find out who can access your Google Drive.
Genius Scan - On The Go.