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<form>
  <textarea rows="5" style="width:500px;border:1px dashed #333; background-color:#eeeeee;" name="text_area">&lt;!-- start visitors button code --&gt;
&lt;a href="" title="Powered by the Visitors Log Analyzer"&gt;&lt;img alt="Powered by the Visitors Log Analyzer" src="http://www.hping.org/visitors/visitors-web-stats.png"&gt;&lt;/a&gt;
&lt;!-- end visitors button code --&gt;</textarea>
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Text Content

Visitors, a fast web log analyzer
Introduction

Visitors is a very fast web log analyzer for Linux, Windows, and other Unix-like
operating systems. It takes as input a web server log file, and outputs
statistics in form of different reports. The design principles are very
different compared to other software of the same type:


click on the image to enlarge

 * No installation required, can process up to 150,000 lines of log entries per
   second in fast computers (20MB/s with my log files average length).
 * Designed to be executed by the command line, output html and text reports.
   The text report can be used in pipe to less to check web stats from ssh.
 * Support for real time statistics with the Visitors Stream Mode introduced
   with version 0.3.
 * To specify the log format is not needed at all. Works out of box with apache
   and most other web servers with a standard log format (see the documentation
   for more information on the format).
 * It's a portable C program, can be compiled on many different systems.
   Binaries for Windows systems are in the Download section of this page.
 * The produced html report doesn't contain images or external CSS, is
   self-contained, you can send it by email to users.
 * Visitors is free software (and of course, freeware), under the terms of the
   GPL license. You don't need to pay to use it. Visitors is supported, if you
   want a custom version made directly by the original author for a modest
   price, contact me at antirez (at) invece (dot) org. ISPs may take advantage
   of the high processing speed.



0.7 released

Changes for the 0.7 version include: --grep and --exclude options to process
only line matching or not matching specified patterns. Patterns can include
jolly characters like *, ?, ranges of chars and so on, this kind of matching is
called glob-style matching (see the online documentation for more information).
Multiple grep/exclude patterns can be used at the same time and are processed
sequentially. Added --ignore-404 in order to avoid that 404 errors are processed
like other log lines to create statistics, useful for sites where there are a
number of requests producing 404 error codes. A new report about users screen
resolution and color depth was added, but only works after the inclusion of the
javascript code you can find in the README file on your web pages. Some other
minor fix.


0.61 released

That's just a bugfix release, the only difference with 0.6 is that stats about
unique visitors here are much more accurate, now Visitors can better recognize
(and ingore) bots other than Google bots and strip their accesses from stats.


News! 0.6 released

Changes for the 0.6 version include: Two new reports, AdSensed pages listing
pages crawled by the Google AdSense crawler, and Google Human Languages report
with common human languages set in the Google Preferences (information obtained
using the 'hl' variable of Google's refers). New feature: Referer spam filtering
using a keyword based blacklist. Better text report formatting. More robust
parsing resulting in more precise reports. Browser list updated and ability to
report different versions of Internet Explorer. HTML report genereation modified
to avoid too long lines, this makes simpler to send reports via email. Important
bugs fixed, reports should be more accurate than before, notably the unique
visitors report.



The new day/hour combined map

Changes for 0.5

note, Fix required for googlebot changes, New reports including a new
bidimentional map that shows traffic level in the whole year, unique visitors
for every month, better generation of graphviz graphs including percentages in
arcs, nodes for google, external links, and no referere, 50% less memory used,
Highlight color for weekend changed to be more visible, most stats are now made
by unique visits and not by number of accesses, many bugs fixed, a real manual
page.


Reports information

Visitors reports contain a number of useful informations and statistics:

 * Requested pages.
 * Requested images.
 * Referers by hits and age.
 * Unique visitors in each day.
 * Page views per visit.
 * Pages accessed by the Google crawler (and the date of google's last access on
   every page).
 * Percentage of visits originated from Google searches for every day.
 * User's navigation patterns (web trails).
 * Keyphrases used in Google searches.
 * User agents.
 * Weekdays and Hours distributions of accesses.
 * Weekdays/Hours combined bidimentional map.
 * Month/Year combined bidimentional map.
 * Visual path analysis with Graphviz.
 * Operating systems, browsers and domains popularity.
 * 404 errors.

You can see a report in html format and the version in in text format


click on the image to enlarge


Trivial to use
Visitors requires no database, nor ability to write on the disk, there is no
installation, configuration file, or any other thing. It takes as arguments
options to control how many lines to show of every report, if to include or
exclude some optional stats, and a list of web log files. You can give more than
just one log file in the command line, and they don't need to be ordered by
date, nor all of the same format!.


Graph generation combined with Graphviz

Using the graphviz mode Visitors will process the web log files and output a
graph ready to be rendered using Graphviz. The generated graph is the visual
equivalent of web trials, but is much more interesting for complex sites, so the
focus of this feature is not to create a generic graph of the whole site, but a
graph of the usage patterns that shows how the users are using it. Click on the
image to see the graph for www.hping.org, or read how to generate it in the on
line documentation.


Examples

The simplest usage, to be used interactively when you have a web log to check
(for example over ssh in your web server), just type:

visitors access.log | less


that will produce an human readable output in text only. To generate html web
stats with much more information you may use instead this:

visitors -A -m 30 access.log -o html > report.html


If you want information on the usage patterns for your site you must provide the
url prefix of your web site, and specify the --trails option.

visitors -A -m 30 access.log -o html --trails --prefix http://www.hping.org > report.html


Note that's ok to specify multiple file names, or to provide the input using the
standard input like in the following two examples:

visitors /var/log/apache/access.log.*
zcat access.log.*.gz | visitors -


Check the documentation for more information on how to use it.


Extending Visitors

Visitors is internally designed to be extended. You can develop more output
modules for it if you are not happy with html and text only. Check the source
code to see how the output modules already developed work. You have just to
define methods for your new output module like print_header, print_title, and so
on.


Download Source Code
(check what's new)

Source code of version 0.7 (for Linux and all the other OSes)
visitors-0.7.tar.gz
On line documentation doc.html
Htmlized source code here


Download Windows Binary

While visitors is free software under the GPL license we sell precompiled
windows binaries for &euro 8; (one time fee, you'll receive all the next
versions for free). If you want you can compile the source code yourself of
course. In order to make you able to test if visitors is useful before to buy it
we provide a demo version here: Note that the demo version is limited and only
outputs the basic report without the advanced features and reports.

Windows DEMO binary (free): visitors-demo.exe

Windows FULL version binary: buy it for € 8 using the following button to pay.
Note: after the payment you'll be automatically redirected to the download page.



Payment via PayPal. PayPal may provide Credit Card and Bank Account Transfer
facilities.



Promotional Button

If you want to promote Visitors add the following antipixel button to your
website or blog. Thank you!




click to get the HTML code


<!-- start visitors button code --> <a href="" title="Powered by the Visitors
Log Analyzer"><img alt="Powered by the Visitors Log Analyzer"
src="http://www.hping.org/visitors/visitors-web-stats.png"></a> <!-- end
visitors button code -->





Bugs

Visitors is a new program, for the nature of the fast parsing technique it uses
it is possible that there are bugs triggered by non common log entries. If you
found such problems, please send me an email with the description of the problem
and if possible the part of access.log causing troubles. On the other hand,
after 4 versions, 3000 downloads and the inclusion of Visitors as Gentoo and
FreeBSD port, we discovered only a minor bug in the parser that version 0.4
fixes, so we consider Visitors ready to be used in production environments.
Thank you for the help.


Security

This section will contain a list of bugs related to security problems found in
visitors. Currently no bug of this kind was reported or found.

VISITORS CODE QUALITY AND AUDITING

Visitors is tested with big log files and the valgrind program before of every
release to ensure that there aren't obvious memory violation problems with
normal log files, and was written with care about security.

POSSIBLE PROBLEMS

Still it's a C program that does a lot of pointer math in order to be fast, and
its work is to process untrusted input (what's written in log files is in part
client-driven), this section is here to contain detailed information if this
kind of bugs will be found in future.

LIST OF SECURITY BUGS FOUND

None for now. If you will find one you are cool and you will be acknowledged
here in the home page. Thanks!


See Also

PHP Interactive, a web based interactive shell for PHP.
xadsen, a Google Adsense (*) monitor for XFree.
Tcl IRCd, A simple IRC server written in Tcl.
Free Tcl Book, Tclwise is a book about the Tcl programming language with many
chapters online for free.
The Jim Interpreter A small footprint implementation of the Tcl programming
language.
The Hping News Archives, newsgroups www archive service.
Archivio Discussioni Newsgroups Italiani
Archivio Newsgroups Scientifici
Blog di cucina siciliana, ricette e tradizioni culinarie siciliane
(*) Google Adsense is a trademark of Google Inc.

Visitors is listed in the Big Webmaster Directory.


Authors

Salvatore Sanfilippo <antirez (at) invece (dot) org>.



Copyright (C) 2004-2006 Salvatore Sanfilippo -- All Rights Reserved

Supported sites: Ragusa Ibla Blog