WassUp is a WordPress plugin to track your visitors in real time. It has a very readable and fancy admin console to keep tracks of your blog’s users visits.
It has a “current visitors online” view and a more detailed “visitors details” view where you can know almost everything your users are doing on your blog, it’s very useful for SEO or statistics maniacs. It comes with a “Spy” view in Ajax like the Digg Spy.
The aim of WassUp is the knowledge of what your visitors do when they surf your blog.
With WassUp you’ll get a cronology of your blog’s visits with a lot of details for each single user session.
Source : http://www.wpwp.org/