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This is a php version of Matt Wrights FormMail.pl. A very simple and very powerful way to have users send you feedback from your web page. Just create the form and let the script do the rest.
Price: Freeware

PHP Formmail processor + advanced visitor session reporting. This script is a simple to configure form to email gateway that integrates highly detailed one-of-a-kind visitor session reports.
Price: Freeware

All of them generate the HTML code for the feedback form and send the email! File attachments and optional input fields are just some of the many features.
Price: Free/$15

The Omnistar Form email form software is a dynamic web form builder for creating and managing forms on your site. The Omnistar Form email form software allows you to create an email list campaign, customize html email templates, and manage online mailing lists. The Omnistar Forms html email form software is ideal for handling forms on your site.
Price: $27.00

Supports nested tables, advanced CSS properties, floating DHTML elements, non-Latin character sets, XHTML and non-XHTML tags and properties, and much more. Nearly any website, even very complex ones like Yahoo.com, can be accurately converted to PostScript or PDF. Nearly a dozen advanced formatting options to control the way that the output PostScript or PDF file is displayed, including Landscape vs. Portrait option, and ability to hide images for faster processing. Several powerful output processing options, including the ability to send the output directly to the browser or save on the server, and the ability to create PostScript or PDF files. Eight different paper sizes available through the "Media" option. Over a dozen character encoding methods available for non-Latin page output. Convert pages that are written in most languages and character sets, including Russian and Eastern Languages. 100% of the source code (a set of PHP and .ps files) included with your download. Backwards-compatible to PHP 4.3.0.
Price: FREE

Form 2 Mail (form2mail.cgi) is a classical script who allow visitor to send some word into your E-Mail.
Price: Freeware

Form 2 Text (form2text.cgi) is a script who allow visitor to send some word into a file.
Price: Freeware

A form where people can register themselves as participants to an event like a LAN-party, schooltrip, you name it.
Price: Freeware

The GnuPG encryption package provides very effective protection of data like email messages, so I got it installed and working as a first step. The next problem was figuring out how to allow the web server to send email when it runs under the 'nobody' account with heavy restrictions. I've been running PHP as a CGI using CGIwrap before, so I started playing with that in the context of a form mailer that encrypted the message body.
Price: GPL