Web log analysis software

Web log analysis software (also called a web log analyzer) is a kind of web analytics software that parses a server log file from a web server, and based on the values contained in the log file, derives indicators about when, how, and by whom a web server is visited. Reports are usually generated immediately, but data extracted from the log files can alternatively be stored in a database, allowing various reports to be generated on demand.

Features supported by log analysis packages may include "hit filters", which use pattern matching to examine selected log data.

Common indicators

 * Number of visits and number of unique visitors
 * Visit duration and last visits
 * Authenticated users, and last authenticated visits
 * Days of week and rush hours
 * Domains/countries of host's visitors.
 * Hosts list
 * Number of page views
 * Most viewed, entry, and exit pages
 * File types
 * OS used
 * Browsers used
 * Robots used
 * HTTP referrer
 * Search engines, key phrases and keywords used to find the analyzed web site
 * HTTP errors
 * Some of the log analyzers also report on who is on the site, conversion tracking, visit time and page navigation.