Kaywa QR Code - Kaywa QR Code is a QR-Code Generator.
Uniqode - Uniqode: Revolutionizing QR Codes, Simplifying Solutions.
Zint Barcode Generator - A barcode encoding library supporting over 50 symbologies.
Visualead - Visual QR code generator
qurify - Online QR Code generator with some advanced settings and print queue.
Link to QR - Free beautiful QR codes