JWhoisServer is a small, fast, and highly configurable RFC 3912 compliant whois server written in Java and using RDBMS as a storage engine. It supports INET lookups (IPv4 and IPv6) and IDN domain names handling).
Xwh0i5 is a small whois domain name search program. It is capable of finding multiple domains input from a file. It performs whois queries on the given domain names and displays the output and writes it to a file.