BarCodeWiz OnLabel - Barcode and QR Code and Barcode
QR Code KIT - Formerly known as uQR.me, QR Code KIT is the strongest, most reliable QR code solution – the only one you'll ever need.
LabelJoy - Labeljoy is another professional barcode software that generates more than 18 different kinds of barcodes, import barcode from the database and automatic checksum calculation.
Manatee Works - Manatee Works offers barcode decoding solutions.
CodeREADr - A smart barcode scanner app for fast barcode scanning with the device camera or accessory. Create barcode scanning workflows and sync data in the cloud.
QRness - A free QR code generator that outputs a QR code widget for every page of your website so that your users can easily send your content to their mobile device for further reading on-the-go without cumbersome sync-tools/registrations/extensions.