Performance Pinging   
Performance Pinging, a tool for testing availability, response times and performance using ICMP. Writes data to a text file for later interpretation with e.g. Excel.

SNMPGetSet   
A little tool to get and set SNMP standard data and individual data. Works on predefined MIB2 OIDs and self-defined OIDs. A little buggy but I just threw the code down and compiled it for use on one project.

EyeOnSite   
EyeOnSite is a tool that keeps an eye on your servers to see if they are accessible on the net. The services monitored are http, ftp, smtp and pop3. Incorporated are visual and audible alerts and option to launch an application or send an email.

Server Maintenance Portal   
IT Asset Management Software that collects hardware and software assets across the network. SMP also works with Microsoft Baseline Security Analyzer to determine the security state of your Windows systems.

BBMonitor   
Bandwidth speed test meter and monitor. Testing your bandwidth with BBMonitor can be so easy and very efficient, recording your bandwidth test results in a database so you can create charts.

AdRem NetCrunch   
NetCrunch automatically discovers network and monitors critical devices, services and applications. It presents physical and logical network topology as customizable graphical maps. In case of problems it notifies admin or executes corrective actions

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.