Using MRTG to monitor traffic loads on network links became too unwieldy when WebTV tried to monitor more devices. To use Cricket, you install a bundle of modules on a server and then program them to collect network traffic data from routers. You define which routers you want to poll and schedule the frequency of the polling. You can then view network traffic trends in Web-based graphs. The program's documentation compares it to Microsoft's Network Neighborhood, and it will let you know with whom you can share files and what network devices you can access.
Users simply have to download TCPNetView into a working directory to run it.
NetSaint will monitor hosts and services, such as SMTP, Post Office Protocol 3, HTTP, Network News Transport Protocol and ping, on a network. And it can send an e-mail or page when problems arise and are resolved. It can be run as a normal process or as a daemon, intermittently performing service checks on what you've specified. NetSaint lets you monitor host resources such as processor load as well as disk and memory usage. This software has a simple plug-in design that lets you develop your own service checkss.