QR Droid - QR Droid Zapper
ZXing - Barcode Scanner for Android
Barcode to PC: Wi-Fi scanner - Turn your smartphone into a real barcode scanner
UpCode - UpCode is a highly developed mobile access & interaction MAI technology that turns mobile...
bcWebCam - Scan barcodes and QR Codes with your computer web cam
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.