Analog
Analog produces a simple summary of all the people who have visited your site.
It is fast and provides great lightweight statistics.

Webalizer
Webalizer is a more complex stats program which produces a nice variety
of charts and graphs about who has visited your site. This is probably
the most popular stats engine available today. You have two options available
to you. You can view the logs from your Web Site or the
logs from your Ftp Site (if you have one).