Enrico Sorcinelli

Sticky Postbox is a piece of code written few years ago as exercise to learn how WordPress handles administration meta boxes’s availables statuses (closed, hidden and sortings).
This very lightweight plugin adds the sticky feature to administration meta boxes allowing them to be sticky at top right corner of the browser window.
Only one meta box can be sticky at once, so a new sticky meta box unstick the current one (if there is one).
<h3>Basic Features</h3>
<ul>
<li>Per-user settings.</li>
<li>Multisite support.</li>
</ul>
<h3>Usage</h3>
Once the plugin is installed and activated you can sticky administration meta boxes using sticky icon (it appears on the top right corner of each box).
<h3>API</h3>
<h4>Constants</h4>
You can use define following constants in your wp-config.php file.
<code>STICKY_POSTBOX_DEBUG</code>
Turn on debug messages (also <code>WP_DEBUG</code> has to be <code>true</code>). 
Default to <code>false</code>.
<code>STICKY_POSTBOX_GLOBAL_OPTIONS</code>
In a Multisite installation, allows to shares user’s sticky meta boxes settings across all his sites. For example, if you sticky Publish box in editing Pages in a specific site, it will be sticky on all Pages of all sites. 
Default to <code>false</code>.
<code>STICKY_POSTBOX_AUTOENABLE</code>
By default if the plugin has been activated, it starts automatically. 
Define to <code>false</code> if you want to init it manually, for example:
<pre><code>// Activate manually the plugin once all plugin have been loaded.
add_action( 'plugins_loaded', function() {
 \Sticky_Postbox::get_instance( 
 array(
 'debug' => WP_DEBUG,
 'global_options' => false,
 )
 );
} );
</code></pre>
<h4>Hooks</h4>
Currently the plugin doesn’t have actions or filters.

Sticky Postbox

Add sticky feature to administration meta boxes.

jaschaephraim

There are no settings or custom functions. Set custom post types to be sticky just as you would with regular posts, and those post id’s will be included in the result of <code>get_option( 'sticky_posts' )</code>.
PLEASE NOTE In order to integrate as seamlessly as possible, this plugin will not alter any queries or filter any functions. If your sticky posts aren’t appearing the way you want, there’s probably a good reason in your query (Is <code>ignore_sticky_posts</code> set to <code>true</code>? Is <code>post_type</code> set to a different type?). This plugin may be most appropriate for developers who just want the native sticky post UI and no other superfluous features.
If you find this plugin useful, please rate it accordingly.

Seamless Sticky Custom Post Types

Perfect

Great plugin! Hasn't been updated for over three years. But it works great, still!

Still works like a dream

Extends the native sticky post functionality to custom post types in a way that is identical to default posts.

Sticky Postbox vs Seamless Sticky Custom Post Types