Barcoder is a project mainly written in Java, it's free.
Web application that generates QR-barcodes for submitted URLs
== Barcoder ==
Barcoder is a Web application that will generate QR-barcodes that encodes a URL, which you provide. It is based on jQuery on the Web-side, Jersey REST on the server side and Mule on the processing back-end.
This application depends on http://github.com/runepeter/mule-ranger-pack
Enjoy!