QR Code KIT - Formerly known as uQR.me, QR Code KIT is the strongest, most reliable QR code solution – the only one you'll ever need.
Kaywa QR Code - Kaywa QR Code is a QR-Code Generator.
BarCodeWiz OnLabel - Barcode and QR Code and Barcode
Zint Barcode Generator - A barcode encoding library supporting over 50 symbologies.
CodeREADr - A smart barcode scanner app for fast barcode scanning with the device camera or accessory. Create barcode scanning workflows and sync data in the cloud.
qurify - Online QR Code generator with some advanced settings and print queue.