TrojanShield 

Use Trojan Shield to protect yourself from hackers and Trojan viruses. If a hacker tries to break into your computer, Trojan Shield automatically warns you so you can take action against them.
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Ping Scanner Pro 

Ping Scanner Pro has 18 network tools, it can ping one address a lot of times or a lot of addresses one time. It will also tell you what MAC addresses are on your subnet, and perform DNS lookup or reverse DNS lookup. It does Traceroute, Whois.
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TFTP Server 

TFTP Server from SolarWinds is the only truly multi-threaded TFTP Server available. You can now Transmit and Receive multiple files concurrently without getting an error. Only TFTP Server with integrated IP Address filter lists for added security.
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Shuttle FTP Suite 

Suite that includes a lot of Internet Applications (FTP, Telnet, TFTP, Ping, Whois, Finger, Time, Daytime, etc...)
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HostInfo 

HostInfo is a software product designed to retrieve domain and network information about internet-hosts and IP addresses (owner name, contact information, DNS servers, etc.).
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Network Spy 

An Ethernet packet capture program. It decodes and analyzes IP packets on your LAN. It also lets you measure network load, resolve IP conflicts and build an ARP table. A powerful rules-based filtering engine enables you to perform intrusion detection
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