LepStats is a program written in Perl, giving a wide range of information about each visitor to your site. It provides reports based on time period (hour, day, month, year), system (visitor's operating system, browser, screen dimension, colour), countries and also displays your referrers and pages visited. Server log files are not needed, as it uses its own log files. The tracking code can be installed on multiple pages and it is hidden to your visitors. For Unix/Linux servers.