This PHP guestbook script will allow your visitors to leave their two cents on your web page. It has a number of customizable features to suit almost any sites design and a optional cursing filter. No database knowledge required. UPDATE: I have recently updated
Developer: Dave Lauderdale Platform: linux, windows Date upd:2006-07-27 Hits1885 [Download] [Visit]

GaesteChaos is a php/mysql based guestbook. Features: optional message in case of a new record; preview of record; smilie-support; comments; ip-logging, and more...
Developer: Mark Albrecht Platform: Date upd:2005-12-19 Hits2666 [Download] [Visit]

Free PHP/MySQL guestbook with secured admin panel. 28 smileys included, IP logging, HTML tag control, CSS stylesheets, floodcontrol, thank and infomail for new inserts.
Developer: lama-computersystems.de Platform: PHP 4.2, MySQL, WIN, UNIX Date upd:2003-03-31 Hits2524 [Download] [Visit]

A simple guestbook. Features: Highly customizable; Multilanguage support (possibility to use the same guestbook with multiple languages at the same time or just the language you prefere.). Languages currently supported: English, Finnish, German, Norweigian.
Developer: mpm.pahviloota.net Platform: Unix Date upd:2003-04-14 Hits2786 [Download] [Visit]

A simple guestbook utlitity that can be easily integrated into your site. Features: Fast, text-based; Open source, so you may tweak it to better serve your needs; Simple, no-frills approach to guestbooks. Requirements: PHP version 4.0 or greater, MySQL version 3.2.3 or greater. Updated
Developer: Andrew R. Freed Platform: linux, windows, freebsd, osx, sun Date upd:2005-08-04 Hits5436 [Download] [Visit]