Generates a volunteer form with submissions available in a new admin section.

Volunteer Form

Provides a smart tag that allows site administrators to provide a form for submissions from volunteers.

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digiacom

Display and manage volunteer projects for any purpose.
<ul>
<li>Registers custom post type <code>wp-vpm-projects</code></li>
<li>Registers metaboxes to the editing screen for project meta fields</li>
</ul>
This plugin is in beta, and is not yet appropriate for a production site.
Important features like post ordering and administrative settings are absent.
That said, perhaps you will find it useful!
This plugin is in use over at <a href="http://www.volunteerwild.org" title="Conservation stewardship in Durango, Colorado" rel="nofollow ugc">Volunteer Wild</a>

WordPress Volunteer Project Manager

Display and manage volunteer projects for any purpose.

Volunteer Form vs WordPress Volunteer Project Manager