Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.
Stocard - All loyalty cards on your smartphone!
QuickMark - QuickMark makes everything possible.
PayPal - PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
QR Droid - QR Droid Zapper
Pass2U Wallet - Put cards into Apple Wallet