A PC is like a small child: you have to look after it because sometimes it gets ill. It´s an odd PC that never gets unstable or crashes because of some internal problem.
This can also be applied to networks, and this Tembria Server Monitor 4.3.2 knows it well. It is dedicated to analyzing your network for you, supporting the usual Internet protocols, and telling you if it finds a problem on your LAN. It gives you information about the different web services like SQL Servers, Oracle, SNMP devices enabled, space in your disc, broadband, HTTP answers and content, etc.
It analyzes 42 types of event and has 12 notification styles, including emails and voicemail.