ZXing - Barcode Scanner for Android
ZXing Decoder - Decode a 1D or 2D barcode from an image on the web. Supported formats i nclude: UPC-A and UPC-E
Dynamsoft Barcode Reader - 1D & 2D barcode scanner SDK for desktop, web & mobile
ConnectUpz - Helping service businesses to connect and grow your customer base by becoming part of of a larger ecosystem.
QR Droid - QR Droid Zapper
Stocard - All loyalty cards on your smartphone!