Java
We have developed an implementation of the use of the QuickPay API in Java. It is not a shop system in the usual sense, but more is seen as a toolbox.
It is freely available and free to use.
Read more about the Java API for Quickpay and download the package on http://sourceforge.net/projects/quickpay/
Below are a number of shops that use Java for Quickpay:
Module updated 09.11.2011
Disclaimer
It should be noted that the use of the module is at your own risk. We provide only limited support for the use of it - please refer to external experts if you want support for your specific shop system.