http://www.thefreesite.com/Webmaster_Freebies/Free_Guestbook_Services/

http://www.a-free-guestbook.com/

http://www.dreamcatchersweb.com/scripts/

http://www.hscripts.com/scripts/php/guestbook.php

http://www.theguestbook.com/

http://www.guestbookworld.com/privacy.htm

http://www.milcobook.com/index.html

http://www.thefreesite.com/Free_Web_Space/index.html

http://www.cellbiol.com/scripts/free_php_guestbook/free_php_guestbook.html

http://www.alxnet.com/services/guestbook/