This app contains the following tools:

Info - basic information about your device network
Watcher - continuous monitoring of remote resources
Local-Area Network - shows all devices on your network
Ping - ICMP, TCP and HTTP ping
GeoPing - Check resource availability worldwide
Traceroute - UDP or ICMP traceroute tool
iPerf - tool for network performance measurement and tuning
Port scanner - TCP ports scanner
Whois
UPnP scanner - UPnPDLNA devices scanner
Bonjour browser
Wi-Fi scanner
Subnet scanner
DNS Lookup
Wake on LAN
IP Calculator

and even more! Enjoy!
From version PingTools Network Utilities 4.17 Free:
• Port knocking support for Watcher tool
• Localizations have been updated. Thanks to the translators!
• Bugs fixes
All versions