ShinichiN

This plugin adds a widget to display furture scheduled posts list on your sidebar. You can specify how many posts to be listed.
<ul>
<li><a href="https://github.com/ShinichiNishikawa/Widget-of-the-Future" rel="nofollow ugc">GitHub</a></li>
<li><a href="http://nskw-style.com/2013/wordpress/plugin-downloads/Widget-of-the-Future.html" rel="nofollow ugc">Plugin Homepage</a></li>
</ul>
<h4>Title and post counts</h4>
In the widget page, you can specify the title and the number of posts.

Future Widget

This plugin adds a widget to display furture scheduled posts list on your sidebar. You can specify how many posts to be listed.

benplum

Presswell

Presswell Publication Schedule adds precise, automated control over how often new posts are published, and is the perfect solution for ensuring a consistent editorial calendar. Configure the days and times when posts should be published, and new posts will be automatically scheduled for the next available time slot.
Features
<ul>
<li>Automatically schedule posts based on simple day and time rules</li>
<li>Ability to override scheduled date for Admins and Editors</li>
<li>‘Publish Now’ actions for Admins and Editors</li>
</ul>
<h4>Documentation</h4>
Filters
<ul>
<li><code>pwps_manage_caps</code> – Filter the capability list used to determine who can use schedule override and “Publish now” actions.</li>
</ul>
The filter receives an array of capabilities. Access is granted when the current user has at least one capability in the array.
Example:
<pre><code>`
</code></pre>
add_filter( ‘pwps_manage_caps’, function( $caps ) { 
 $caps[] = ‘manage_publication_schedule’; 
 return array_unique( $caps ); 
} ); 
 `

Presswell Publication Schedule

Simple and precise post publishing control for WordPress based on day of the week and time of day.

Future Widget vs Presswell Publication Schedule