Orion NPM is a mature and reasonably priced product. It is easy to deploy and configure, and has an excellent user and network mapping interface.
Room for Improvement:
Resource utilization is heavy so you need to analyze the server before using it for multiple roles. We are unable to use web console to configure new alerts.
SolarWinds Orion NPM tracks bottlenecks in your network infrastructure and lets you troubleshoot them before a disaster happens. It uses protocols and tools like ICMP, SNMP, Cisco NetFlow, and Syslog to provide you with the alerts and statistics you need to run your network at optimal performance and speed. The product is easy to deploy on top of an IIS and .Net framework. It also has excellent built-in thresholds and alerts available to help you get started, yet provides the option to create custom thresholds and alerts as required by your specific network and infrastructure requirements. A comprehensive web interface is available to identify inconsistencies and trouble spots in your network.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Jul 11 2012