We have re-released xFunction under a freeware license and ceased its further development officially. We shall continue supporting xFunction customers that have purchased a commercial license for another twelve months.
If you need a JNI proxy, have a look at JNA (Java Native Access), which provides essentially the same functionality as xFunction, is available for more platforms, and is open sourced under LGPL.
If JNA does not work for you or you cannot use LGPL software, please feel free to continue using xFunction. We may even port it to a platform of your choice, at your expense.
For the avoidance of doubt, our flagship product, Excelsior JET, is and shall remain our top priority.