C1 Network Monitor is an essential tool for network administrators and service providers. Simple and easy to use, C1 periodically checks the availability of any TCP services or Hosts, and performs an immediate notification to the desired person when a service is not responding. In this way network administrators will ensure themselves a fast network maintenance, giving their services a superior quality. With the help of the external programs execution feature or the url call action C1 can start external repair processes to fix the problem where possible, to log its events into an external database, or to update an external ticket system. Due to its flexibility, C1 can monitor a wide range of network services, allowing users to customize TCP requests and adapt them to specific services, which can be standard or not. For the most common services, a set of built-in accurate monitors have been included in the aplication to let users building reliable monitor agents extremely easily.