Version 12.3 Released: 4/21/2006 Free / $34 Platform: Unix, Windows
Free Perl Guestbook. Active Guestbook does most things that other guestbooks do and much more. It now has support for multiple languages. - More Info....

Version 1.0 Released: 5/1997 Free Platform: Unix
This Online Administrative Feedback Form offers paginated guestbook entries (10 entries/page) as well admin can delete entries via check-box online form and can ban/unban isp's. - More Info....

Version 1.0 Released: 11/2/2002 Free Platform: Unix, Windows
A very easy to install and flexible guestbook script for your site! - More Info....

$59 Platform: Unix, Windows
csGuest is an automated application that allows the user to manage one or more guestbooks from one location. You can add as many guestbooks as you would like. Many sites use a guestbook to get comments about their web site. This guestbook can double as a single thread forum as well. - More Info....

Version 1.25 Released: 1/31/2004 Free Platform: Unix, Windows
Designed to be a reliable and easy-to-use guestbook. The enhanced adaptability of FPG lets you easily create a style that fit your site. Update service in the Guestbook Control Panel will automatically notify you of updates. - More Info....

Free
Allow users to sign their name, E-mail address or URL, their ICQ number, AOL screen name, and a message. The guestbook will then create a post where the user's name will be either a link to the URL that they left or a mailto: link to the E-mail address that they entered. - More Info....

Version 3.2 Free Platform: Unix
Guestbook works with templates, protection against duplicates, can disallow HTML-Code, Email notification if there's a new entry. - More Info....

Version: 2.0 Free Platform: Unix/Linux
Guestfriend is a simple yet powerful, free guest book. All texts and layouts are 100% customizable. You have complete control over the look and feel. Also comes with an admin control panel and installation interface to make installation easy. - More Info....

Version 2.1 Free
Customize the Guest Book layout through the admin panel on the fly and never touch the HTML template or customize the whole Guest Book layout through only one HTML template. - More Info....

Version 2.2 Free Platform: Unix, Windows
It can even support as many guestbooks as you want! Run a guestbook for a friend. Can send e-mail if you so wish. It takes 3 min to set up, or to make a new guestbook. - More Info....