ServerObserver Network Monitor can monitor various internet services, databases, Windows, and UNIX/LINUX systems. It informs you of error situations by sending an e-mail or SMS, etc. It lets you view the current status on the web.

LANView is a tools collection for network administrators, that combines several network diagnostics and monitoring tools into a single interface. It includes a network sniffer (with filtering).

Enterprise software and network management services that enable IT companies to achieve greater productivity and dramatically improve the quality of their operations.

A collection of 25 Network Discovery, Monitoring and Management tools. Includes Full NETWORK MONITOR with email alerts, BANDWIDTH MONITOR, MIB WALK, IP BROWSER, PROXY PING, DNS AUDIT and many more. Pound for Pound, the best collection available.

ipMonitor delivers basic up/down monitoring for your network devices, servers, and apps.

ipPulse is a Remote Status Monitoring Tool. Use ipPulse to monitor the up/down status of IP connected devices (nodes) on any IP connected network. ipPulse alerts you to failures using audible messages, email, pager, web, and logs.

NetPalpus is a powerful and easy-to-use network management tool, which can discover, organize and monitor all devices on your network.

Archive Event Logs from multiple computers to a central database. Monitor for changes to files, the registry, users, groups, services, security policies, and more. Restore files and the registry from snapshots. User account auditing and analysis.