No Longer Here

Creates a widget that displays posts and thumbnails in a selected category. Thumbnails will display 100px square. Author name links to author page (if in use) or list of posts. Posts are sorted in descending order by date. This is a fork of <a href="https://wordpress.org/extend/plugins/category-posts/" rel="ugc">James Lao’s Category Posts plugin</a>, with less options.
Style “thumbcol” and “contentcol” classes to make it look pretty (make the thumb appear to the left of the excerpt, for example).

Featured Categories

Creates a widget that displays posts and thumbnails in a selected category.

voceplatforms

Chris Scott

Adds multiple post thumbnails to a post type. If you’ve ever wanted more than one Featured Image on a post, this plugin is for you.

Multiple Post Thumbnails

Even though this plugin hasn't been updated in a long time, it still works great! So I guess there's just no reason for the developer to have it updated. ;-)
For me this plugin is one of the easiest ways to selectively add a header image. I want it on some pages, but not on others. Using the standard Featured Image function will set it foor all or none, so that's not flexible enough.
One suggestion for an update though:
Now you still need to add the following snippet to your theme's function.php.
if (class_exists('MultiPostThumbnails')) {
    new MultiPostThumbnails(
        array(
            'label' => 'Secondary Image',
            'id' => 'secondary-image',
            'post_type' => 'post'
            'post_type' => 'page'
        )
    );
}
It would be great if the plugin did this automatically. That will also keep the plugin active if you switch themes. 
P.S.
To add the meta box to other post types, just add it to the snippet.
'post_type' => 'event' will add it for Events Manager, for example. ;-)



Still works great!

Adds multiple post thumbnails to a post type. If you've ever wanted more than one Featured Image on a post, this plugin is for you.

Featured Categories vs Multiple Post Thumbnails