Advanced Web Statistics or AWStats is a free powerful Web server logfile analyzer that shows you all your Web statistics including visits, unique visitors, pages, hits, rush hours, search engines, keywords used to find your site, robots, broken links, and more.

This software works with both IIS 5.0+ and Apache Web server log files as a CGI and/or from the command line. It also supports multiple languages including English, French, Dutch, Spanish, Italian, German, Polish, and Greek.

AWStats uses a partial information file to be able to process large log files, often and quickly. It analyzes log files from all major server tools like Apache log files (NCSA combined/XLF/ELF log format or common/CLF log format), WebStar, IIS (W3C log format) and a lot of other web, proxy, streaming servers, mail servers and some ftp servers.

AWStats is a free software and is distributed under the GNU General Public License.

A full log analysis with AWStats displays the following information:
* Number of visits, number of unique visitors
* Visits duration, last visits,
* Authenticated users, last authenticated visits,
* Days of week and rush hours
* Domains/countries of hosts visitors
* Hosts list, last visits and unresolved IP addresses list
* Most viewed, entry and exit pages
* Web compression statistics (for mod_gzip or mod_deflate),
* OS used
* Browsers used
* Visits of robots
* Worms attacks
* Search engines, keyphrases and keywords used to find your site