Simple Guestbook uses ASCII files to store messages and true HTML customizable templates for display. Display can be paginated or not, moderator function is included. To run it on your server, ZendOptimizer ver.2.x must be installed.
PHPGuest is a very small but very functional guestbook program. It was written so that any webmaster can insert the code into the website with no problems at all, it is 100% xhtml compliant and written in PHP.
A PHP driven guestbook that requires neither MySQL nor any other database. The only requirement is PHP enabled on your web server. Very easy to configure and setup. Has administration module making it easy to delete entries.
Also called a fruitwall, this script allows you to post a one-line message on your site that anybody can change by clicking on it. All the changes are archives. Great for telling one-line jokes. Works almost to the same effect as a simple tagboard.
With this script you can allow visitors to leave comments on your website. It uses templates for easy output customization, and supports the use of multiple guestbooks if you want to have more than 1.