Recommend It! lets your visitors tell their friends about your site. You can very easily set how many fields (friends) the user can recommend your site to, and has validation, as well as e-mail validation to prevent spamming. If you want, the script can also notify you each time a user uses the script, and tells you who they recommended your site to.

ENotify notification software is a simple and affordable script that allows your site visitors to tell a friend or colleague about your site through a simple online form. Optional notification on script use and a sample popup form also included.

A message board script for PHP and MySQL. Allows simple setup, and easy use. For Internet Exploper.

Fully customizable Smarty templates for Tell-A-Friend (TAF) and Thankyou forms, pages, messages, emails. Manage ads and coregistrations with an array of options. Detailed TAF usage stats.

SMe_Tell is a site recommendation script that sends thank-you messages to those who recommended your site.