WAMA - Cloud-based, mobile-optimized warehouse management software
ZXing - Barcode Scanner for Android
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.
QuickMark - QuickMark makes everything possible.
ScanLife - The ScanLife mobile application converts a typical camera phone into a universal barcode reader.
QR Droid - QR Droid Zapper