ShinichiN

<p>Displays subtitle text field after the title in post, page and other post type edit page.</p>
<ul>
<li><a href="https://github.com/ShinichiNishikawa/subtitle" rel="nofollow ugc">GitHub</a></li>
<li><a href="http://nskw-style.com/2013/wordpress/plugin-downloads/subtitle.html" rel="nofollow ugc">Plugin Homepage</a></li>
</ul>
<h4>Retriving and displaying in templates</h4>
<p>Use <code>get_nskw_subtitle()</code> to retrieve and <code>nskw_subtitle()</code> to display.</p>
<h4>Change label</h4>
<pre><code>By default the label of the input field is "Subtitle". There's a hook for changing it.

add_filter( 'nskw-fat-meta_label', 'nskw_changeLabel' );
function nskw_changeLabel() {
    return 'new label';
}
</code></pre>
<h4>Hide in specific post types</h4>
<p>By default, subtitle field appears in every post type edit pages except for attachment.</p>
<p>To hide in particular post type pages, there’s a hook.</p>
<pre><code>// hide subtitle field in posttype 'attachment', 'page'、''newposttype'
add_filter( 'nskw-fat_post_type', 'nskw_hide_subtitle' );
function nskw_hide_subtitle() {
    return array( 'attachment', 'page', 'newposttype' );
}
</code></pre>


Subtitle

Displays subtitle text field after the title in post, page and other post type edit page.

HasanulBanna

<p>This plugin creates an option to enter sub heading for pages and posts. You can display the sub title in your theme by using the
    </p>
<p>Developed by <a href="http://coregenie.com/" rel="nofollow ugc">Coregenie Technologies</a></p>
<p>Coded By <a href="http://hasanulbanna.com/" rel="nofollow ugc">BANNA360</a></p>


Subtitle 360

This plugin creates an option to enter sub heading for pages and posts. You can display the sub title in your theme by using the

Subtitle vs Subtitle 360