(The main function of this software is to regularly check the network connectivity of the host and the service status of the application system, and notify the administrator of abnormal situations through email, text message, RTX, sound, etc., so that the administrator can understand and deal with the problem in time. This software is a simple and useful auxiliary management tool, which can be used to check the network connectivity of servers, routers, switches and other hosts, and can also be used to monitor the status of using services, such as whether websites and information management systems can be accessed normally. This software is shareware, you can monitor 3 hosts or use it without registration, and you can monitor and use an unlimited number of hosts after registration.)