ClickHeat is an open source heatmap statistics application & PHP class that visualizes your visitors clicking activities which is a very nice way of getting a snapshot of your visitor’s browsing behaviors.
Heatmaps can also be generated using its heatmap class inside other web applications.
ClickHeat is lightweight as very few function calls to log a click, no server load rise should be noticed. For tweakenings with the settings check the performance & optimization page.
Requirements: Apache or Lighttpd (other may work fine), PHP, GD2 (PNG support needed).
