L' esclau CGI proporciona un mètode per a executar programes CGI sense la necessitat d' executar un servidor web. Per exemple, es pot emprar per a provar localment programes CGI o per a usar motors de recerca que tan sols proveeixen les interfícies CGI, com ara el de Doxygen.
The CGI slave provides a way to execute CGI programs without the need to have a running web server. This can for example be used for local testing of CGI programs or for using search engines that only provide a CGI frontend like the one from Doxygen.