Freeware: Winpcap

myNetMon 2.0myNetMon, Network Monitor and Packet Analyzing Tool (V.2.0)myNetMon is windows based network monitor and packet analyzing (sniffer) tool.myNetMon uses winpcap , a windows port of Libpcap which is a packet capturing library.

SmartSniff 1.35SmartSniff allows you to capture TCP/IP packets that pass through your network adapter, and view the captured data as sequence of conversations between clients and servers.

MZL&Novatech Traffic Statistics 1.2.0.1MZL&Novatech TrafficStatistic shows accumulated bandwidth usage of a network interface like ethernet, DSL or PPP in tray. It generates IP traffic statistics IPDR data and can generate reports on his top bandwidth consumers cut by host and service.

easy Look at Net 0.8.9"easy Look at Net" is a simple ports scanner, packets sniffer and web-page source loader. Multithread ports scanner and packets sniffer specifically made to scan opened TCP ports,packets are filtered by incoming and outgoing, by IP addresses.

The Network Toolkit 1.0The Network Toolkit - Free Edition is a fully functional version CACE Technologies Network Toolkit, with the same console and the ability to run from CD or USB pen drive. However, it contains a limited set of tools compared to the Full Edition.

Analyzer Alpha 3.0F+-r erste Schritte im Bereich Packet Trace bietet sich das englischsprachige Tool Analyzer an. Das Sniffer wurde von einem Team der Universit+At Turin entwickelt und ist Freeware.

Free Monitor Tool 2.1This is a free edition of AthTek NetWalk, which can help network administrators in network monitoring and packet sniffing greatly. It takes advantages of many popular network monitoring tools and achieves better performance.