Simone Maranzana

Evolve

Andrea Gandino

By default, the plugin allows to have only one sticky post at a time, which 
means that when saving a post that has been flagged as sticky, it automatically 
unsticks other posts.
Under <code>Settings</code> > <code>Lonely Sticky</code>, an option can be found that allows you to 
define how many sticky posts can exist at a time. For example, if a maximum of 
3 posts is allowed, when saving a post that has been flagged as sticky, the two 
most recent sticky posts present (if any) will be kept as sticky, along the one 
that’s being saved.
Setting the option to <code>0</code> will disable sticky posts completely.

Lonely Sticky

Works perfectly

Allow only a certain number of sticky posts at a time.

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.

Lonely Sticky vs Sticky Postbox