Read & Write for Google Docs, Kaizena, and on EdCeptional #42. Here's a new one that just for creating and reading QR Codes.
The QR Code Extension is designed to allow you to quickly create QR codes for downloading and sharing. Once you are on a page, just click the icon in your extension bar (to the right of the address bar) and it will show you the QR Code. Click "Edit This QR Code" to find options for downloading and sharing.
The other option is not one I've seen in an extension. Click the "Scan a QR Code" and it allows you to use your webcam to decode a QR Code. So if you've ever been sitting and wanted to use a code, this is the extension for you!! It's a great option for students, I've always advocated for using QR Codes for long URL's and this would help do that without a special program. Just print out QR Codes for your students and let them scan using the extension.
You can try out The QR Code Extension here!