This site shows you the top 50 authors in Linux Kernel development of each current stable and longterm releases. The data is beeing generated from the ChangeLog files provided at

The data shown below is generated on-the-fly using a Bash/CGI script. It parses around 170MB of data extremely fast using only Shell code and standard Linux/UNIX utilities like cat, cut, grep, head, sed, sort and uniq. Think of doing this using PHP - maybe using a bloated MVC framework - is a bad idea and I believe this will fail in performance... ;) The code is available here: