What are some alternatives?
When comparing Obsqr and QR BARCODE SCANNER, you can also consider the following products
Barcode Scanner - Barcode Scanner for Android
QuickMark - QuickMark makes everything possible.
NeoReader - The NeoReader is a universal barcode scanning app that transforms your mobile phone into a barcode scanner, allowing access to mobile web content by scanning codes from virtually any medium
MKH Barcode Reader - This tool can be used to scan QR codes on your PC or tablet. Note: a webcam is required.
QR Droid - QR Droid Zapper
bcWebCam - Scan barcodes and QR Codes with your computer web cam