Ruven

This plugin registers a custom post type for galleries and a taxonomy for categories.
Selected themes by Ruven provide templates to display galleries. 
In other themes you most likely have to add them by yourself.

Ruven Themes: Gallery

RT Gallery enables a "Gallery" post type and "Category" taxonomy.

Nilambar Sharma

<h3>NS Featured Posts</h3>
This plugin adds checkboxes for each list item. You can easily check/uncheck the Featured flag. Checking the Featured will set the meta value yes for meta key _is_ns_featured_post. You can choose which post types you want Featured functionality from plugin settings.
<h4>Using in theme</h4>
This plugin only sets/unsets the meta key for assigned posts. You need to implement it in your theme to get Featured functionality.
Example:
<pre><code>$query = new WP_Query( array( 'meta_key' => '_is_ns_featured_post', 'meta_value' => 'yes' ) );
</code></pre>
This will fetch the list of posts that are checked as Featured.
Want to see how this can be used in a Page Template? 
<a href="https://gist.github.com/ernilambar/ad31b89b459e954fc950" rel="nofollow ugc">Click this link to see an example</a>

NS Featured Posts

A plugin for making posts, pages, or custom post types featured. Users can enable/disable Featured flags for selected post types.

Ruven Themes: Gallery vs NS Featured Posts