It would be nice to use ASP.NET, but PHP is ok too, and should be hosted in IIS6.

EDIT: the logs are from our intranet site.

11 Answers 11


Analog: http://www.analog.cx/

Also, check out this blog entry: http://weblogs.asp.net/steveschofield/archive/2007/09/04/log-analsyis-software-for-iis.aspx

  • While not updated in quite some time, Analog is an excellent program. – Christopher_G_Lewis May 28 '09 at 13:30
  • a bit old, but very fast and gets the job done. – alexandrul May 30 '09 at 16:52
  • we use analog, but indihiang is promising (although the current beta is almost useless) – Magnetic_dud Jun 15 '09 at 10:30
  • Analog appears to have disappeared off of the internet, and the blog post link no longer works. – Bobson Sep 30 '14 at 15:28

We use awstats. http://awstats.sourceforge.net/

  • +1 for awstats. It's as good as the old webtrends reports we used to run, and has modules for additional functionality. Plus the cost can't be beat! – Milner May 28 '09 at 13:17
  • +1 awstats is great! – squillman May 28 '09 at 16:29
  • +1 it is also my choice for public sites – alexandrul May 30 '09 at 16:54

The Microsoft IIS resource kit has a log parser that lets your run SQL like queries on IIS Logs.

I also rate awstats if your dont know what your looking for & would just like some stock reports.

I believe google analytics is probably the best value you'll get for free, you dont even need your log then :)

What are you looking for by analyzing logs?

  • Just more or less detailed user usage of different sections of the sites, nothing special. But easier configuration for reporting on IIS is a big bonus. – alexandrul May 28 '09 at 12:45
  • The IIS Resource Kit is a nice way to query a .log file like SQL and find the top used resources. – proudgeekdad Dec 5 '12 at 21:33

The best solution to your problem (as clarified in your comment) is NOT to analyze the logfile at all. Use Google Analytics. It will give you all the details about traffic you're likely to need and even some customizations (via the API, that is a simple javascript call) necessary to track stuff that's typically un-trackable via log parsing anyway (client-side clicks etc.)

There are very few use cases that REQUIRE customized or DIY log parsing (even if they're free). You can always keep the logs archived for a rainy day if you run into one of those cases.

  • +1 but, my mistake, I didn't mention that the logs belong to our intranet site. Also the content is not totally under my control, so I can't use a counter like Google Analytics or Statcounter. – alexandrul May 28 '09 at 16:11
  • I found Google Analytics incredibly inaccurate. It severely under-reports traffic. – Taptronic Jun 6 '10 at 19:14

there is al easy alternative. make IIS to log to an MSSQL table. After you can work with it like a normal database. search for a ODBC conection on the root of you site.


If you want to do log analysis for compliance reasons (detecting attacks, etc) I would suggest using the open source OSSEC (can't post a link because I am a new user, but just google for it).


See also: https://stackoverflow.com/questions/344693 and https://stackoverflow.com/questions/915207

I'm looking at checking out the accepted answer from the latter question sometime in the next week.

Update: I've been using the free version of Smarter Stats for a while now and despite some minor challenges getting it set up, I love it.


Super easy to install and a user friendly interface: SmarterStats.



Indihiang Project is a web log analyzing tool. The tool analyzes IIS and Apache Web servers in comprehensive graphs and reports.

Project Features

  • .NET Framework with C# as programming language
  • Web Log Viewer and analyzer
  • Web Log Consolidation
  • Web Log Real-time monitoring
  • Support for IIS6 and IIS7
  • Trend Data Analysis
  • Reporting

Try piwik.org

Piwik is downloadable, Free/Libre (GPLv3 licensed) real time web analytics software. It provides you with detailed reports on your website visitors; the search engines and keywords they used, the language they speak, your popular pages, and much more.

  • +1 thank you, it works great on my intranet. – alexandrul Jul 16 '12 at 11:04

I sometimes use Baretail

It has a free version and allows you to use regular expressions against large files (over 2gb)

Google analytics alone is not enough. there are people without javascript enabled and/or block it with adblock plugins and the http errors from iis.

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