As a recent addition to the shelves of the Ubuntu Software you might not have heard of Qreator before. But the simple interface and tight Unity integration mean that it is just as capable, if not more so, than similar offerings we have looked at in the past - like as QtQr.
We've written about several tools that makde creating Qrcodes - two-dimensional barcodes made up of black squares on a white background - in Ubuntu easy, but the following tool, QtQr, beats them all hands down. Along with the ability to quickly create custom QrCodes containing text, URLs, e-mail, SMS and telephone numbers QtQr also comes with a 'decoding' feature.
A few days back we walked you through creating QR codes via the command line in Ubuntu. Following that post a developer, David Green, put together a GUI front-end for the process, allowing for a more user-friendly experience in generating 2D barcodes.
QR Codes are nifty time-saving shortcuts; sort of like hyperlinks for the real world. Qrencode is a small command-line utitlity that allows you to create your own QR codes (saved as .png image file) for whatever you like - a blog, a secret message - whatever!