The Apache Modules Book: Application Development with Apache
Nick Kewis a leading developer of Apache applications, many of which can be found at his company's site, http://apache.webthing.com. He is a member of the Apache Web server core development team and of the Apache Software Foundation. He is active in both user and developer support, and gives tutorials and presentations at relevant conferences such as ApacheCon. He created and maintains http://www.apachetutor.org, and writes on Apache topics for a range of leading online publications.