With Nifone, you can calculate the Spanish National identification number (NIF) with a National Identity Document (DNI) number. This will bring you to obtain a valid NIF with any combo of numbers.
More types and countries coming soon!
Nifone (com.aone.nifone.mac) is a Mac software application that has been discovered and submitted by users of Software.com.
Default Install Path: /Applications/Nifone.app