QuickMark - QuickMark makes everything possible.
bcWebCam - Scan barcodes and QR Codes with your computer web cam
ZXing - Barcode Scanner for Android
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.
Barcode to PC: Wi-Fi scanner - Turn your smartphone into a real barcode scanner
ConnectUpz - Helping service businesses to connect and grow your customer base by becoming part of of a larger ecosystem.