QR Journal allows users with an iSight (or iSight compatible) camera to read QR codes. Found a QR code in a magazine or catalog? Simply hold up to the iSight camera to scan, store and browse to. Received a QR code in an email? Just drag it into QR Journal to read it.
Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.