Ftpcheck version 0.32 scans hosts and networks for FTP and anonymous FTP archives. It was written as a security analysis tool. ftpcheck is very fast. It can effectively scan a class C network for anonymous FTP sites in less than 5 seconds. It does this by starting a new process for each connection. ftpcheck requires perl and libnet (from CPAN).
You can download it from the following link: https://packetstormsecurity.com/files/download/14147/ftpcheck.pl
Source: https://packetstormsecurity.com/files/14147/ftpcheck.pl.html