BW Whois is Bill's open-source whois client. Originally released in December 1999, and still in active development, BW Whois has evolved into a full-featured command-line/web client with rich security features, caching and database support.
AMTP (Authenticated Mail Transfer Protocol) is Bill Weinman's solution to the SPAM problem. AMTP is being designed as a replacement for SMTP, with security features designed to reduce the impact of Unsolicited Bulk Email (UBE) and the cost of running mail servers.
Mr. Weinman has written five books, including The CGI Book and, with his sister Lynda, Creative HTML Design. He has contributed to other books on programming and web design and has written articles for various computer-related periodicals.