PRTG - Paessler Router Traffic Grapher 6.2.1.957
PRTG Traffic Grapher is an easy to use Windows application for monitoring and classifying bandwidth usage. It provides system administrators with live readings and long-term usage trends for their network devices. PRTG is mainly used for bandwidth usage monitoring, but may also be used to monitor many other aspects of a network such as memory and CPU utilization. The user receives detailed and comprehensive bandwidth and network usage data.

Alchemy Network Monitor PRO 9.6
Alchemy Network Monitor monitors your network servers and business-critical applications availability and performance and immediately alerts you if a server gets out of order. Alchemy Network Monitor can also perform certain actions (e.g. launch an external application or execute an SQL query) when a server stops responding to the programs requests and maintain a detailed server monitoring log.

Alchemy Network Monitor 9.6
Alchemy Network Monitor monitors your network servers and business-critical applications availability and performance and immediately alerts you if a server gets out of order. Alchemy Network Monitor can also perform certain actions (e.g. launch an external application or execute an SQL query) when a server stops responding to the programs requests and maintain a detailed server monitoring log.

CommandCenter-NOC 6.0
The CommandCenter NOC performs network monitoring with a powerful polling engine, keeping close watch on your Windows servers, Linux/UNIX servers, network devices and applications. It can also continually monitor the performance of your network using configurable thresholds. If an outage is detected, or a threshold is crossed, the appropriate staff members can be alerted with e-mail or pager-based notifications.

AdRem NetCrunch 5.x
NetCrunch 5 offers agentless policy-based monitoring of Windows, Linux, NetWare and SNMP devices in one package. It centralizes fault management, collecting, alerting and delivering performance reports on events from SNMP sources, Windows Event Logs and syslog servers.

Alchemy Eye 9.7
Alchemy Eye is a system management tool that continuously monitors server availability and performance. In the event of network errors, Alchemy Eye can alert the network administrator by cell phone or pager BEFORE problems get seriously out of hand. This helps protect your company's data and reduces the likelihood of costly network failures. If a server goes down, Alchemy Eye automatically notifies the network administrator.

Alchemy Eye PRO 9.6
Alchemy Eye PRO is a system management tool that continuously monitors server availability and performance. In the event of network errors, Alchemy Eye PRO can alert the network administrator by cell phone or pager BEFORE problems get seriously out of hand. This helps protect your company's data and reduces the likelihood of costly network failures. If a server goes down, Alchemy Eye automatically notifies the network administrator.

Axence nVision 3.5
nVision monitors your network: Windows, TCP/IP services, web and mail servers, URLs, applications. It also monitors routers and switches: network traffic, interface status, connected computers. You can collect network inventory and audit license usage. nVision will alert you in case of a program installation or any configuration change. With the agent you can monitor user activity and access computers remotely. You can access nVision via the Web!

WebWatchBot Website Monitoring Software 5.1.7
WebWatchBot 5.0 makes it easy to implement website and web-based application monitoring for response time, downtime and error conditions. View performance from the end user perspective and identify the impact of individual infrastructure components on response time. WebWatchBot uses an agent-less protocol, which means that nothing is installed on the server or network component being monitored. Powerful historical reports and real-time charts

FREE PacketTrap pt360 ToolSuite 2.2.5
pt360 Tool Suite (PacketTrap: http://www.PacketTrap.com) provides network monitoring and diagnostic tools from a single intuitive interface. Key features are device discovery and inventory, Cisco Configurator, Switch Port Mapper, NetFlow Listener, TFTP server, SNMP, WMI, Port Scan, DNS Audit, Trace Route, Syslog Server, application monitoring, Ping and supports open source tools (i.e. Nagios, MRTG, Cacti), SaaS (Salesforce.com), virtual servers