"A Free PHP Topsite Script
Aardvark Topsites PHP
Aardvark Topsites PHP is simply the best topsites script available. It is licensed under the GNU General Public License so it will always remain completely free. The most popular features include the following:
* Counts pageviews, hits in, and hits out
* Robust anti-cheating protection
* Members' ranks can be shown on their buttons
* 100% customizable skins
* Powerful and efficient admin area
* Easy installation [...]
Aardvark Topsites PHP has a ton of features. I'm not going to bore you with all the inane details, but here is a list of the main features.
* Members ranks can be shown on their button.
* New: Stat Buttons, allowing you to customize your buttons and display all kinds of stats on them
* 6 different ranking methods
* Counts unique pageviews, total pageviews, unique hits in, total hits in, unique hits out, and total hits out
* New: Rank daily, weekly, or monthly
* Up/down/neutral arrows
* Customizable categories
* Fully customizeable skins: make your topsites look however you want!
* Simple web-based installer and upgrader
* Multiple pages
* Member login and lost password retrieval
* Seamlessly switches between languages
* Fast, integrated search
* Ad breaks
* Visitors can rate and review members
* Advanced stats and graphs
* Easy to install and maintain
* Powerful admin
* New: Mass mail members
* Best of all, it's completely free!"