NetToolset is a free suite of admins' favorite network tools enhanced with some cool features. The toolset includes Ping, Traceroute+, DNS Lookup, Reverse DNS Lookup, Blacklist Lookup, IP Whois, Domain Whois and Port Scan. Tailored for network admins, the software is also suited for regular users, thanks to the easy to use interface.
You can save results in HTML format, query multiple hosts at once, quickly import IPs and hostnames from any text or file. Target hosts are saved between application restarts to facilitate repetitive tests.