1)   SkDNS ActiveX Control 4.0
SkDNS ActiveX Control is a DNS (Domain Name Service) ActiveX control that can be used for network diagnosing, troubleshooting, and monitoring. It allows developers to integrate the DNS protocol message sending capability into their applications.

 2)   DNS Thing 1.0
DNS Thing is a free tool that lets Windows users perform DNS queries from a graphical interface. It provides commonly looked up information such as IP addresses for hostnames or MX records for domains.