Nagios Nagios is a bot devoloped by Nagios Enterprises, LLC.. Latest Nagios versions:Nagios 2.0Nagios 1.4Latest user agents:check_http/v1.4.15-61-g4d527 (nagios-plugins 1.4.15)check_http/v2.0.3 (nagios-plugins 2.0.3)check_http/v1.4.14 (nagios-plugins 1.4.14)check_http/v2.3.3 (nagios-plugins 2.3.3)check_http/v2.2.1 (nagios-plugins 2.2.1)