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.

Maeve Lander

<p>This simple button creator lets you create one or more floating buttons that stick to the side of your site as the user scrolls.</p>
<h4>Use it for sticking information like:</h4>
<ul>
<li>Phone number</li>
<li>Email address</li>
<li>Social icons</li>
<li>Store locations</li>
</ul>
<h4>Configuration options include:</h4>
<ul>
<li>Button position > left or right</li>
<li>Rollover style > darken or lighten</li>
<li>Animation style > none, slide or icons only</li>
<li>Disable on mobile (optional)</li>
<li>Customise button icons, text, link, and colors easily</li>
<li>Show on: Front Page, Pages, Posts, Custom Post Types (checkboxes)</li>
</ul>
<h4>Demo</h4>
<ul>
<li><a href="http://demo.enigmaweb.com.au/" rel="nofollow ugc">Click here</a> for out-of-the-box demo. You can see the buttons to the right of the screen, in ‘slide’ mode.</li>
</ul>


Sticky Side Buttons

Works great

Flexible button creator allowing you to stick floating buttons to the side of your site.

There Can Be Only One vs Sticky Side Buttons