Analog
The most popular logfile analyser in the world.

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Recent News
(Older important news: security warnings, major bugs, etc. All older than 21-Oct-99.)

Frequently Asked Questions
Q: What is Analog?
A: Analog is a program to analyse the logfiles from your web server. It tells you which pages are most popular, which countries people are visiting from, which sites they tried to follow broken links from, etc.

Q: How much does it cost?
A: Nothing. It's free!

Q: How fast is it?
A: Very, very fast. I'm uncompressing and processing 2 million logfile lines per minute on a 266MHz chip: that's 1GB of data every 5 minutes. (See sample.)

Q: How big a logfile can it cope with?
A: It depends on your system. But I know of one site using it on logfiles of over 500 million lines (50GB).

Q: Can it speak different languages?
A: Yes. You can have the output in any of 34 different languages.

Q: How configurable is it?
A: Very. The default output will be satisfactory for most people, but there are hundreds of options producing 32 different reports for those who want to do things differently.

Q: Is it easy to install?
A: Yes. There are executables available for several platforms including Windows (95, 98 & NT) and Mac, and it compiles straight out of the box on most other platforms.

Q: What platforms does it run on?
A: Almost any. It's written in standard C, so should compile on almost any machine with a C compiler. It's known to work under Windows (all versions), DOS, Mac, all Unix, Linux, OS/2, OpenVMS, Acorn RiscOS, BeOS, NeXTSTEP & BS2000/OSD.

Q: What logfile formats can it read?
A: Almost any. It has built-in knowledge about the common format, NCSA combined format, referrer log, browser log, W3 extended format, Microsoft IIS format, Netscape, WebSTAR and Netpresenz formats: but the user can specify other formats.

Q: Can I see some samples?
A: Sure. Have a look at my statistics pages.

Q: Who else is using analog?
A: A recent survey showed that 25% of webmasters use analog, more than any other logfile analysis program. Try asking AltaVista for some of them.

Q: And what do they say about it?
A: You can read some unsolicited comments on another page.

Q: What do the results mean?
A: There's a page in the documentation all about this.

Q: What other documentation is there?
A: You can see the whole user manual for the current version. The documentation for version 3.32 and for version 2.11 are also still available.

Q: Can I get help with setting it up or using it?
A: Yes. Just subscribe to the analog-help mailing list.

Q: Oh, one more thing. Is it Year 2000 compatible?
A: Yes. (And so were all previous versions).

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Stephen Turner - Univerity of Cambridge Statistical Laboratory Analog Mailing List