AdventNet ManageEngine OpUtils 

The AdventNet ManageEngine OpUtils is a comprehensive set of 40+ unique system and network monitoring tools. This web-based software helps IT administrators monitor, diagnose and troubleshoot their IT resources. OpUtils is web-based and very quick.
network utilities system utilities network tools switch port mapping network troubleshooting network monitoring cpu monitor memory utilization diagnostic tools bandwidth monitoring cisco router monitoring address monitoring cpu desktop monitoring snmp monitoring

iNetQuery 

iNetQuery is a powerful Internet utility for network monitoring. Special query features, like DNS, Whois or NetStat, can be used to determine detailed information about domains, hostnames or network providers.
network.internet tools netstat whois dns ping traceroute spf query