These analyzers provide visibility into wired and wireless technologies. To help you narrow the search for that perfect network analysis tool, please consider this list of best free network analyzers:
Wireshark is considered by many as most powerful network protocol analyzer application. It is used for network troubleshooting, analysis, software and communications protocol development, also in education allowing you to examine data from a live network or from a capture file on disk.
Wireshark is open source cross-platform application with versions for Windows, Mac OSX, Linux, BSD, and others platforms and supports hundreds of protocols and media types.
Zenmap is the official GUI for the Nmap Security Scanner. Zenmap is available for Windows, Linux, Mac, and BSD. Zenmap can be used to read live captures or save captures for later viewing.
This Wi-Fi network discovery tool displays every wireless hotspots MAC address, encryption, signal strength and channel, and is the standard troubleshooting tool for millions of Wi-Fi users throughout the world.
WinDump is the Windows version of tcpdump, the command line network analyzer for UNIX. WinDump is fully compatible with tcpdump and can be used to watch, diagnose and save to disk network traffic according to various complex rules.
JDSU Network Analyzer Software Standard Edition
JDSU Network Analyzer Software Standard Edition is a program that turns your PC into a network tester. You can quickly determine who is on your network, who is using bandwidth, where errors may be occurring on the network, use expert analysis tools to solve network problems.
Angry IP scanner
Angry IP scanner is fast and friendly network scanner for Windows, Linux, and Mac. It is very extensible, allowing it to be used for very wide range of purposes, with the primary goal of being useful to network administrators.