QR.io - Generate fully customized QR Codes, with color shape & logo
Offline QR Code Generator - A browser add-on that allows you to quickly generate a QR code offline with the URL of the open tab...
Logaster Online BrandMaker - Create your corporate style instantly online within 5 min.
Zint Barcode Generator - A barcode encoding library supporting over 50 symbologies.
VisualCode - QR codes for everything
QtQR - A Qt GUI (front-end) for python-qrtools that makes creating and decoding QR codes easy.