NLog is a set of PERL scripts for managing an analyzing your nmap 2.0 log files. It allows you to keep all of your scan logs in a single searchable database. The CGI interface for viewing your scan logs is completly customizable and easy to modify and improve. The core CGI script allows you to add your own extension scripts for different services, so all hosts with a certain service running will have a hyperlink to the extension script. More information on extending the core CGI is in Section 3 of this document.