ProFTPD

I've played around a little with ftpwho and changed ftpcount.c and ftpwho.c a little.
Now they have options:
-i : display the local IP address for the connection
-d : display the local domain name for the connection
-I : specify local IP address to display connections for
-D : specify local domain name to display connections for

Works pretty cool so far... Have not thoroughly tested this, but so far the result are good.

ftpwho.c
ftpcount.c