Fing is recommended for home users, IT professionals, and small to medium-sized businesses that need to monitor their network security and performance. It's particularly useful for users who want to keep track of all devices connected to their network and ensure optimal network functionality.
Ping Meter Gadget - Customizable, graphical, semi-transparent ping (latency) meter.
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Fping (open source) - fping is a program to send ICMP echo probes to network hosts, similar to ping, but much better performing when pinging multiple hosts.
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use
Multiping - Get MultiPing Support. Network monitoring in 60 seconds. MultiPing provides a graphical view of network performance, monitors hundreds of targets, and sends automatic alerts..
Advanced IP Scanner - Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free.