Gwolle Guestbook is the WordPress guestbook you've just been looking for. Beautiful and easy.
WP Guest Book is simple Guest book plugin.
Really Simple Guest Post Plugin will help you to generate a guest posting form in the simple and easiest way.
LIBRO DE VISITAS- GUESTBOOK is the WordPress guestbook you've just been looking for. Beautiful, responsive,easy and multi-language.
Guest Post Simplified Plugin will help you to accept post from any visitor in the simple and easiest way. All guest posts will be saved as draft.
Get fresh and unique content for your blog by letting guest bloggers submit posts without giving them wp-admin access.
Give an opportunity to your unregistered readers to post on your Blog.