TheOne Server Monitor Lite is using to monitor the healthiness of servers, such as Unix/Linux (PING/RSH), Web (HTTP/URL), Email (SMTP/POP3/IMAP), Database (MySQL) and Application (FTP / Telnet / DNS/ SNTP-TIME/ NNTP-NEWS) servers. User can customize to monitor any TCP/UDP Port. Server Monitor will notify you by Email/SMS/Syslog/SNMP/Pager if any monitored servers or URLs can't be reached (or returns an unexpected response) a number of times.