I was doing a review of content management systems, and came across a surprising reference on Wikipedia.

What surprised me was the large number of free CMS products there are, and that most are written in PHP. The reference also goes on to group commercial products into low (<$5k), medium ($5-15k), and a high ($15>) categories. At the low commercial end, the split is between .NET solutions and PHP solutions.

At the high end, surprisingly to me, was the predominance of all the Java solutions.