Jordy Meow

Rename the alternative text of your media easily directly using the Media Library, without a click.
BETA. This plugin was just created. I am waiting for the first feedbacks of my users to decide which way to go. The first thing I will implement is to update the ALT in the POSTS.
BE KIND. Again, this plugin is new. Please help us 🙂
More information available on http://apps.meow.fr/media-alt-renamer/.
<h4>Quickstart</h4>
<ol>
<li>Check the Media Library, in list view (not grid view).</li>
<li>Modify the Alt Text field, and simply type ENTER when it’s done.</li>
</ol>

Media Alt Renamer

Rename the alternative text of your media easily directly using the Media Library, without a click.

The Jake Group

This plugin allows you to change the words “Posts” and “Pages” in the admin 
interface to anything you’d like. Plural inflection is currently not 
supported… sorry… no geese or boxes for you! Choose your new term in the 
“Rename Posts/Pages” panel. This plugin requires PHP 5.

Posts/Pages Admin Renamer

Allows a user to change the words "Posts" and "Pages" in the admin interface.

Media Alt Renamer vs Posts/Pages Admin Renamer