Yuya Hoshino

How it works:
<ol>
<li>
Click ‘Tools > Bulk Term Editor’.
</li>
<li>
Select a taxonomy. 
If you selected a taxonomy which has terms, it will read those into the field.
</li>
<li>
Get your data ready. 
Prepare your data by spreadsheet such as Excel. 
If you selected a taxonomy which has terms at the step 2, it’s easy to copy that data into the spreadsheet.
</li>
<li>
Copy the cells. 
You may copy all lines, but the more lines there are, the more times spends. 
Copying the minimum necessary lines is the best, but safer to copy all lines.
</li>
<li>
Paste to this plugin. 
Paste it into the ‘Term’ field of this plugin.
</li>
<li>
Execute. 
Clicking the ‘Edit’ button executes it.
</li>
</ol>
<h4>Delete</h4>
Entering a ‘*’ in beginning of line will delete.
<h4>Change the term slug</h4>
Entering a ‘>New slug’ after the term slug will change the term slug.
<h4>Add</h4>
When the term slug is a blank or new, add.

Bulk Term Editor

Just came here to say THANK YOU, this plugin is a very very handy and useful tool to manage BIG list of taxonomies. Thank you. 

Awesome Job! Thanks

You can register or edit terms in bulk. Copy cells in the spreadsheet, all that remains is to paste to this plugin.

bobbingwide

vsgloik

This plugin enables you to filter posts in a particular category and then apply mass updates to selected posts.
Actions supported:
<ul>
<li>Update to selected category – Delete the currently filtered category and set a new Target Category for the selected posts</li>
<li>Add selected category – Adds the Target Category to the selected posts</li>
<li>Delete selected category – Deletes the currently filtered category from the selected posts</li>
<li>Republish – update the post date to the current time stamp.</li>
<li>Republish – alter the post date by adding or subtracting defined amounts</li>
<li>Update post meta – set the values for simple post meta fields</li>
<li>WordPress SEO hide – update WordPress SEO post meta to “hide” posts</li>
<li>WordPress SEO unhide – update WordPress SEO post meta to “unhide” posts</li>
</ul>
Scheduled republishing:
<ul>
<li>Scheduled republishing using WordPress CRON</li>
<li>Category republishing of the oldest post in selected Categories</li>
<li>Tag republishing of the oldest post with selected Tags</li>
<li>Republicizing using Jetpack publicize.</li>
</ul>

oik batchmove

Version 2.4 provides some additional actions that help you to mass set post meta data values, including values used by WordPress SEO (now Yoast SEO) to hide/unhide posts from the XML sitemap.



Easy way to hide/unhide posts from WordPress/Yoast SEO sitemap

The oik-batchmove plugin enables you to perform mass updates to the categories assigned to posts. It also enables you to republish posts.

Bulk Term Editor vs oik batchmove