George Pattichis

christopherross

Allows users to add custom fields to the media uploader and access those fields in posts or template files. Great for adding copyrights, image meta etc.
To display the custom fields in your theme, use the following shortcode in post/pages:
<ul>
<li><code>[acfm id="123" field="my_custom_field"]</code></li>
</ul>
Where <code>id</code> is the ID of the media item and <code>field</code> is the name of the custom field.
For PHP templates, use the following code:
<ul>
<li><code>echo get_post_meta( 123, 'my_custom_field', true );</code></li>
</ul>
To use this plugin effectively, download and intall it on your WordPress blog. Next, access “Media Custom Fields” page in your admin Settings and create a new custom field for your media uploads.
<ul>
<li>Unique ID – The unique variable name for this item. It may not contain special characaters or spaces</li>
<li>Field Title – The name you want to appear in the media uploader</li>
<li>Field Help – A descriptive message you want to appear in the media uploader</li>
</ul>
Once you’ve added a custom field, you can access it via the Media Library or during the Add Media process of uploading a new item.
This plugin was originally developed by <a href="https://profiles.wordpress.org/christopherross/" rel="nofollow ugc">Christopher Ross</a>. The plugin has been adopted and refactored by <a href="https://profiles.wordpress.org/pattihis/" rel="nofollow ugc">George Pattichis</a> who will continue development and maintenance.
<a href="https://wordpress.org/extend/plugins/add-custom-fields-to-media/changelog/" rel="ugc">Changelog</a>

Add Custom Fields to Media

Add custom fields to media uploader and access them in template files. Great for copyrights, image meta etc.

bellathemes

This plugin is meant to used by some of themes by Bellathemes. This plugin registers required custom post types and meta fields to make theme able to work.
Note: Some of the features are not available on free version of the theme.
This plugin creates sub menu ‘Bella Kit’ on wordpress admin panel under settings. Enable ‘Custom post types’ according to your requirement.

Bella Kit

Register common custom post types, taxonomies and meta fields.

Add Custom Fields to Media vs Bella Kit