Meitar

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.

davidfcarr

RSVPMaker Volunteer Roles extends the calendar and attendee signup functions of the <a href="https://wordpress.org/extend/plugins/rsvpmaker" rel="ugc">RSVPMaker</a> plugin. The scenario here is to allow registered users of a website, who have at least subscriber rights, to sign up for specific volunteer roles.
Whereas RSVPMaker is usually used to sign up anonymous users on the public website, with RSVPMaker Volunteer Roles we pull names from the user profiles rather than having users type them in.
Users can easily sign up for multiple roles with a few clicks, without having to submit a form. Administrators can then pull reports on who is signed up for upcoming events and track hours volunteered in past events.
Roles are specified in the body of the event post using this shortcode format:
[rsvpvolunteer role=”ROLE NAME AND TIMESLOT HERE” hours=”2″ count=”1″]
The hours parameter (for tracking volunteer hours) and the count parameter (1 or multiple people needed to volunteer for this role) are optional. The defaults are 2 hours, 1 instance of the role.
To display an interactive calendar that shows upcoming volunteer openings (but no other event details), you can use the shortcode
[volunteer_calendar]
To display a summary of volunteers signed up for the coming week on the public website, you can use this shortcode 
[volunteer report]
or for a different period such as a month
[volunteer_report days=”30″]
The same report can be accessed from the Volunteer Report menu item on the administrator’s dashboard.
This is a generalized version of role signup techniques also used by the <a href="https://wordpress.org/extend/plugins/rsvpmaker-for-toastmasters" rel="ugc">RSVPMaker for Toastmasters</a> plugin.
Plugin home page: <a href="http://www.rsvpmaker.com/" rel="nofollow ugc">RSVPMaker.com</a>
<h3>Credits</h3>
<pre><code>RSVPMaker
Copyright (C) 2015David F. Carr

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

See the GNU General Public License at <http://www.gnu.org/licenses/gpl-2.0.html>.
</code></pre>

WordPress Volunteer Project Manager vs RSVPMaker Volunteer Roles