Alex

<p>This plugin ensures that there is only one sticky post published to the site. When a new sticky post is published, previous the ‘sticky’ flag is removed from any other posts, so they will no longer appear at the top of your page.</p>
<h3>Important Notes</h3>
<ul>
<li>I adapted code initially found at http://craiget.com/one-sticky-post-in-wordpress/ Thanks to Craige for posting it! Also, Devin Price (http://wptheming.com/) was immensely helpful as I knocked out a couple of issues regarding scheduled sticky posts.</li>
<li>The first time you publish a sticky post after enabling this plugin, any and <em>all</em> other sticky posts will be changed to not-sticky. There is not a way to automatically reverse this decision, nor is their a log of which posts were changed.</li>
<li>This plugin has not been tested with versions of WordPress prior to 4.0.</li>
<li>Do not use this plugin if you are using another to manage per-category sticky posts. It has not been tested with that setup, and it will most likely mark all of those posts as non-sticky.</li>
</ul>


There Can Be Only One

Ensures that there is only one published sticky post on the site at any given time.

Aaron Brazell

<p>Adds a new admin settings section to the Settings > Reading table. Drag and drop Sticky Posts in the order you want them considered by WordPress. (Note: You still have to set posts as sticky on the post edit screen for sticky posts to show up)</p>


Sortable Sticky Posts

Adds drag and drop Sticky Post sorting to the Settings > Reading Page. WordPress likes to store Stickies in order they were stickied.

There Can Be Only One vs Sortable Sticky Posts