Sam Spade

Sam Spade is a general-purpose Internet utility package, with some extra features to help in tracing the source of spam and other forms of Internet harassment. Sam Spade features include:
ping - nslookup - whois - IP block - dig - traceroute finger - SMTP VRFY - web browser keep-alive - DNS zone transfer - SMTP relay check - Usenet cancel check - website download - website search - email header analysis - Email blacklist - query Abuse address - And More...