Back a couple of years ago, there was a really great (for its day) statistics package called ShortStat that was available for free for sites running on PHP / MySQL. ShortStat became extremely popular, and eventually evolved into a commercial statistics package called Mint. As such, development on ShortStat stopped. Luckily, Stephen Wettone also enjoyed using ShortStat and decided to build a statistics package based on it, which he called SlimStat. Even better, he decided to keep SlimStat free.
So if you're looking for a nice and quick but in-depth statistics package for your website, give SlimStat a look.
