sorry but in my opinion this program doesn't make much sense because it's just like "normal" bruteforcing.
to me the generated password files are waste of space because a simple brute forcer can do the same job
without this gigabytes of diskspace
sure it is, IF THE BRUTEFORCER DOES SUPPORT generating passwords on it's own.
i made this app because not every bruteforcer has that option and if someone is working on a bruteforcer he can find an algorithm for the password generation here (which is one of the reasons why i provided the sourcecode)