Internet Speed Test by Ookla
Website Speed Test by Pingdom – Enter a URL to test the load time of that page, analyze it and find bottlenecks
DNS Health by Pingdom – Enter a domain name to check if its DNS servers are configured correctly
Ping & Traceroute by Pingdom – Enter a hostname or IP address to perform a Ping or a Traceroute
WhoIs Lookup – Find information on any web address.
Network Calculators– Includes: Subnet Mask Calculator, IP Address Converter, Subnet Mask Converter & Subnet Mask Inverter
PageSpeed Insights by Google – PageSpeed Insights analyzes the content of a web page, then generates suggestions to make that page faster.PageSpeed Insights by Google
IP Lookup – If you can find out the IP address of an Internet user, you can get an idea what part of the country or world they’re in.
Remotix – Connect to all of your computers from anywhere.