Freeware Network Auditor

GNS3 is a network software emulator that allows the combination of virtual and real devices, used to simulate complex networks; its name is comes from Graphical Network Simulator..
Download GNS3 3.0.6 (from Network Auditing)

64.2 MB | For Windows 7, Windows 8 / Vista / XP | Free

RawCap is a free command line network sniffer for Windows that uses raw sockets..
Download RawCap 0.2.1.0 (from Network Auditing)

53 KB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XP | Free

NetWorx Portable is a simple and free, yet powerful utility for measuring your bandwidth usage and speed of all kinds of wired and wireless network connections (dialup, Ethernet, ISDN, DSL, wireless)..
Download NetWorx Portable 26.5 (from Network Auditing)

4 MB | For Windows 7, Windows 8 / Vista / XP | Free

Advanced IP Scanner is a free network scanner designed which scans your local network for connected systems and services. A review of Advanced IP Scanner has also been published.
Download Advanced IP Scanner 2.5.4594.1 (from Network Auditing)

8.4 MB | For Windows 7, Windows 8 / Vista / XP | Free

SoftPerfect Network Scanner analyzes and produces detailed reports for all systems connected to your same local network between the IP address ranges that you specify, showing IP, MAC Management Health and the speed of response to ping, in addition to controlling the ports TCP and SNMP services. A review of SoftPerfect Network Scanner has also been published.
Download SoftPerfect Network Scanner 26.5 (from Network Auditing)

1.92 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XP | Free

WinPcap is a filtering program that allows you to capture IP frames in a Windows environment. A review of WinPcap has also been published.
Download WinPcap 4.1.3 (from Network Auditing)

894 KB | For Windows 7, Windows 8 / Vista / XP | Free

MiTeC Network Scanner is a free multi-threaded ICMP, Port, IP, NetBIOS, ActiveDirectory and SNMP scanner with many advanced features..
Download MiTeC Network Scanner 6.1.0.0 (from Network Auditing)

2.9 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XP | Free

EasyNetMonitor is a small network information tool which resides in the system tray. A review of EasyNetMonitor has also been published.
Download EasyNetMonitor 4.0.1.6 (from Network Auditing)

217 KB | For Windows 7, Windows 8 / Vista / XP | Free

Advanced Port Scanner is a free tool with the main function of finding open ports on computers inside of a network. A review of Advanced Port Scanner has also been published.
Download Advanced Port Scanner 2.5.3869 (from Network Auditing)

19.5 MB | For Windows 7, Windows 8 / Vista / XP | Free

Microsoft Network Monitor is a protocol analyzer that has been replaced by the Microsoft Message Analyzer..
Download Microsoft Network Monitor 3.42350 (from Network Auditing)

6.5 MB | For Windows 7, Windows 8 / Vista / XP | Free