Port Authority is described as 'Fast Android port scanner providing network information and quick host discovery. Designed for systems and network security with real-time insights' and is a IP Scanner in the network & admin category. There are more than 50 alternatives to Port Authority for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Port Authority alternative is Nmap, which is both free and Open Source. Other great apps like Port Authority are Angry IP Scanner, Fing, Zenmap and NetPeek.
grIP is a console-based, multiplatorm TCP port scanner with support for IPv4 ranges as well as individual IPv6 IPs. It will shuffle the scan range and utilize a configurable number of sockets to scan it in parallel.
Network Analyzer can help you diagnose various problems in your wifi network setup, Internet connectivity, and also detect various issues on remote servers thanks to the wide range of tools it provides.
NetworkArch is a network diagnostic app equipped with various tools, including pinging specific IP address or hostname, sending Wake on LAN magic packets, Whois and DNS Lookup.
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