Lazarus is a free guestbook script written in PHP that uses your My SQL database for storage and is based upon the excellent Advanced Guestbook script from Proxy2.
Lazarus has more features and several layers of anti spam protection to make one of the most feature rich and spam resistant guestbook scripts available for free. It works using "flat files" - that means no need to fiddle with complex My SQL databases!
It includes many useful features such as preview, templates, e-mail notification, picture upload, page spanning , html tags handling, smilies, advanced guestbook codes and language support.
The admin script lets you modify, view, and delete messages.
PHPKode Guestbook uses the Captcha image as the way to anti-SPAM protection.