Packet Sniffers
Packet Sniffers: What Are They? Alongside Some Great Packet Sniffing Tools
10 Best Packet Sniffers – Comparison and Tips – DNSstuff
- WireShark Packet Sniffer
- SmartSniff
- Microsoft Message Analyzer
Very effective in troubleshooting network issues and verifying protocol implementation.
The Microsoft Message Analyzer tool has been retired - Network Miner
It is used by many organizations around the world for years and is a trustworthy option amongst many.
https://www.netresec.com/?page=NetworkMiner
NetworkMiner
NetworkMiner is an open source Network Forensic Analysis Tool (NFAT) for Windows (but also works in Linux / Mac OS X / FreeBSD). NetworkMiner can be used as a passive network sniffer/packet capturing tool in order to detect operating systems, sessions, hostnames, open ports etc. without putting any traffic on the network. NetworkMiner can also parse PCAP files for off-line analysis and to regenerate/reassemble transmitted files and certificates from PCAP files.