When Servers Alive detects a down condition, it can respond with a wide array of notifications and alerts, including sending an e-mail (SMTP) saying what is down, paging you with a numeric or alphanumeric warning, executing a program, playing a sound, creating a web or WAP page, and restarting an NT service.

LanTopolog 2
Provides automatic physical network topology discovery, network map visualization, detailed and searchable physical network topology map, monitoring device's state in real-time, network traffic monitoring, web browser-based access

AdRem iTools
AdRem iTools is a networking toolset combining Ping, Traceroute, DNS Lookup, SNMP viewer, port/network/bandwidth scanner, and more. The tools’ output can be saved to a file (text, XML, HMTL, or Excel), while Ping or Traceroute tests can be gra

sysCOMP
Remotely compare any two systems on your network. The dynamically generated web page presents detailed configurations of both systems side by side. Great tool for troubleshooting application problems or configuration issues.

MIB Browser
MIB Browser allows you to view the hierarchy of SNMP MIB variables in the form of a tree and provides you with additional information about each node; may perform SNMP Get and Get-Next requests; etc

AdRem SNMP Manager
AdRem SNMP Manager allows for the remote monitoring and control of network devices. The solution supports SNMP v1, 2, and 3, enabling tasks such as SNMP node discovery; trap receiving/forwarding; MIB viewing, compiling, loading, editing, and walking.