A1Monitor web server monitoring software monitors multiple URLs. This network monitor tool will watch your web servers to make sure they're serving data. If any URL can't be reached a number of times in a row, A1Monitor can alert and notify you by email or pager, execute a program or batch file for you, and restart / reboot your server. Runsas an NT Service. Great for monitoring Microsoft IIS and ASP pages as well as any other type of web server.