From String Codes Design:
Quis? is a smart WhoIs information searching software. With thousands of information source providers scattered around the Internet, it is not always an easy job to find detailed WhoIs information for a domain name or an IP address. Quis? retrieves information from various smartly chosen WhoIs sources to get the best possible result with a single user query. Quis? searches all generic domains and all country specific domains. It virtually searches all domains in the world. Quis? is capable to filter out non-content comments from the result and provides reports with clear lay-out.