eRS (eRecommend Site) allows visitors to send (Recommend) an e-mail message
about your site to friends simply by entering the email address (and name
optional).
SendMe.cgi sends an HTML page either as HTML or as plain text. A list of URLs follows the text portion of the page. The idea is to get as many of the useful parts from the HTML as possible, but formatted as text.
ApplyRefer allows you to place simple cut-and-paste HTML on your website that allows visitors to e-mail associates about your website. You can place the code in multiple places on any pages you like. But unlike other refer-a-friend tools you might have seen, ApplyRefer records all information processed, including e-mail addresses of users and recipients. Once the data is stored, you can quickly analyze trends in referrals at a glance.
PageMailer is a simple script that allow your visitors to email the contents of your web page (or the portions you specify) to their friends or as a reminder to themselve, giving you free advertising! This is a great way of getting more and more and more visitors without spending a fortune.
This program isn't specifically designed to be a tell a friend script, it could be used for any kind of email function. It simply send's a message to someone with certain form input.