SoftPerfect Network Scanner 是一个免费的多线程的IP, NetBIOS和SNMP扫描器，拥有漂亮的界面和多种高级的功能特性。它同样可以检测用户自定义的端口并报告已打开的端口，解析主机域名和自动检测您的本地IP范围。

哑巴监视器(又名:哑巴嗅探器)是一款利用计算机的网络接口捕获流经本机网络上数据报文的免费网络软件。

哑巴监视器可以用来分析当前网络中的流量,找出所关心的网络中潜在的问题。例如,假设网络的某一段运行得不是很好,报文的发送比较慢,而我们又不知道问题出在什么地方,此时就可以用哑巴监视器来作出精确的问题判断。在合理的网络中，哑巴监视器的存在对系统管理员是致关重要的，系统管理员通过哑巴监视器可以诊断出大量的不可见的模糊问题，这些问题涉及两台乃至多台计算机之间的异常通讯有些甚至牵涉到各种的协议，借助于哑巴监视器系统管理员可以方便的确定出多少的通讯量属于哪个网络协议、占主要通讯协议的主机是哪一台、大多数通讯目的地是哪台主机、报文发送的字节数、或者相互主机的报文传送间隔时间等等，这些信息为管理员判断网络问题、管理网络区域提供了非常宝贵的信息。

哑巴监视器是带嗅探设置、统计分析、发包测试、进程监控、数据分析、编码转换和其他辅助功能(密码嗅探、邮件嗅探，文件传输嗅探等)的网络监视器，在共享式局域网内能捕获流经本机的所有TCP、UDP、ICMP等数据包，并把捕获到的IP包具体结构信息和敏感数据详细显示出来。从而方便各位网管朋友分析网络流量和解决具体故障，也有利于其他网络安全朋友做测试。软件中利用到了多线程的技术，使主程序在嗅探时可以进行实时统计分析和进程监控，并能手动控制各个线程的工作状态。软件运行起来快速、准确、高效。

SoftPerfect Network Scanner is a free multi-threaded IP, NetBIOS and SNMP scanner with a modern interface and several advanced features. It is intended for both system administrators and general users who are interested in computer security. The program pings computers, scans for listening TCP ports and displays which types of resources are shared on the network (including system and hidden).

In addition, it allows you to mount shared folders as network drives, browse them using Windows Explorer, filter the results list and more. SoftPerfect Network Scanner can also check for a user-defined port and report back if one is open. It can also resolve host names and auto-detect your local and external IP range. It supports remote shutdown and Wake-On-LAN.

Key features
Pings computers.
Does not require administrative privileges.
Detects hardware (MAC) addresses even across routers.
Detects hidden shared folders (normally invisible on the network) and write accessible shares.
Detects your internal and external IP addresses.
Scans for listening TCP ports and SNMP services.
Retrieves currently logged-on users.
You can mount and explore network resources.
Can launch external third party applications.
Exports results to HTML, XML, CSV and TXT
Supports Wake-On-LAN and remote shutdown.
It is absolutely free, requires no installation, and does not contain any adware/spyware/malware.

官网：http://www.softperfect.com/products/networkscanner
~Support Windows 95, 98, ME, NT, 2000, XP, 2003, Vista, 2008~

官方下载：Free~