yoren

Yoren Chang

With this plugin, you can custom the Featured Image metabox by:
<ul>
<li>Set the title text instead of the default “Featured Image”.</li>
<li>Add instructions for the image, like the image dimensions.</li>
<li>Set a custom set / remove link text, instead of the default “Set / Remove featured image”.</li>
<li>Custom the metabox by post types. Each post type has its own custom settings.</li>
</ul>

Custom Featured Image Metabox

Custom the title, content and set / remove link text in the Featured Image metabox.

Tahir Yasin

This plugin adds a meta box to upload multiple images for posts and pages. You can enable it for custom post types also, please see installation instructions.
<h3>miu_get_images()</h3>
This function can be called from any template file to get attached images for the page/post being viewed. 
It returns an array of the attached image URL.
It take only one argument:
<ol>
<li>
post_id (integer) to get images linked to a specific post
 http://www.example.com/image-1.png 
 [1] => http://www.example.com/image-2.png 
)
?></li>
</ol>

Multi Image Upload

This plugin adds a meta box to upload multiple images for posts and pages.

Custom Featured Image Metabox vs Multi Image Upload