ZXing - Barcode Scanner for Android
QuickMark - QuickMark makes everything possible.
MKH Barcode Reader - This tool can be used to scan QR codes on your PC or tablet. Note: a webcam is required.
UpCode - UpCode is a highly developed mobile access & interaction MAI technology that turns mobile...
QR Code Reader “Q” - Formerly QR Code Reader “Q,” now QRQR, is a smart code reader application.
Obsqr - obsqr is an open-source, fast and lightweight QR scanner for Android.