thomtoonen

<ul>
<li>Alt text column in the media list</li>
<li>“Bulk edit alt text” button on upload.php</li>
<li>Bulk modal to edit filename and alt text per item</li>
<li>When renaming files, references in post content are updated</li>
</ul>

TTO Bulk Media Editor

Edit alt text and filename in bulk from the media library (list and grid view).

MasterNs

Bulk post editing allows you to apply actions on a number of selected WordPress posts instead of doing it manually on each post 
which could be time consuming particularly if you have a large amount of posts.
However, default bulk editor allows you just to add Categories to Posts. 
This plugin extends default Bulk Editor so you can remove Categories from posts.
The plugin works with default Post type, Woocommerce products and any other Custom Post Type. Supports multiple taxonomies per post.

Bulk remove posts from category

Simple and very good

Not working

Now you can use default WordPress Bulk Editor not just to add Categories but also to remove categories from posts.

TTO Bulk Media Editor vs Bulk remove posts from category