Scott Gamon

signup-page is a plugin that allows you to create a public signup page. A signup page is just a list of stuff 
that you can sign up for, with a space next to each item where someone can sign up.
There is no validation of input, and no login is required. This is a true public signup page. However, when a 
person signs up, that slot is frozen to the public (no further changes). Site admins can make changes to any slot, 
at any time.

Signup Page

Creates a public signup form where people can sign up for pot lucks, volunteer jobs, whatever.

jaromy

<h4>Sign Me Up</h4>
This plugin is a widget that adds a simple sign-up form to your WordPress site, allowing visitors to subscribe to your mailing list. It serves as a front end to <a href="http://www.phplist.com" rel="nofollow ugc">phpList</a>, the most popular open-source newsletter manager (over 1.5 million downloads according to their website). The widget connects to phpList via AJAX, which allows a visitor to subscribe without leaving your WordPress page – no refresh or redirect is necessary.
Features:
<ul>
<li>Add a simple “sign-up to our newsletter” form to your WordPress site</li>
<li>Provides a back-end connection to the powerful open-source mailing list manager, phpList </li>
<li>Maintains the consistent look, feel, and branding of your WordPress site</li>
<li>Uses AJAX – no page refresh or redirects. Status & feedback are displayed on the same page as the form</li>
<li>Minimal, elegant, simple. Seamlessly blends in with your theme by incorporating existing styling rules</li>
<li>Easy customization – change the text of each form element so it says exactly what you want</li>
<li>Widgetized – easily add it to your site via drag & drop</li>
<li>Error checking – client side validation via popular jQuery Validation library provides immediate feedback to the user and reduces erroneous data</li>
</ul>
More information
<ul>
<li><a href="http://www.jaromy.net/wordpress-plugins/sign-me-up/" rel="nofollow ugc">Sign Me Up</a></li>
</ul>

Sign Me Up

Add a simple straightforward sign-up form to your WordPress site. Integrates with phpList, the most popular open-source newsletter manager.

Signup Page vs Sign Me Up