Splitter - Splitter enables big brands like CNN, Carlsberg, and hundreds of others to effectively manage, track and split all their links and QR codes from one place.
ZXing - Barcode Scanner for Android
Tagginn - Generate your QR Codes with TAGGINN.
QuickMark - QuickMark makes everything possible.
The QR Code Generator - Free Online QR Code Generator to make your own QR Codes. Supports Dynamic Codes, Tracking, Analytics, Free text, vCards and more.
QR Droid - QR Droid Zapper