NetCrunch Tools is a handy network troubleshooter which brings together 11 commonly-used tools.
There are old standards, like Ping and Traceroute. Enter an IP address or domain name, click Start and watch as the results are displayed.
If you need to check your entire network, then a Ping Scanner discovers used addresses, while other tools list MAC addresses, available network services, open TCP ports or basic SNMP information.
"Who Is" and "DNS Tools" tell you who owns a domain, and give you various other low-level details (Address record, Mail exchange record, more).
A "Wake On LAN" function allows you to turn on a computer remotely by entering its MAC address (assuming it supports that function), and a "DNS Audit" tries to identify DNS settings errors.
There are no surprise extras here. No fancy graphs, no detailed reports, NetCrunch Tools concentrates very much on its core functionality only. A clean and straightforward interface ensures it's all very easy to use, though, and if your network needs are simple then NetCrunch Tools will probably be enough.