Mehdi Kabab

When your permalink structure does not end by a trailing slash (/), all your links look like http://example.com/2009/05. Permalink Trailing Slash Fixer add the missing trailing slash.
<h4>Example</h4>
If you have a site with the following permalink structure <code>/%category%/%postname%.html</code> and your permalinks 
look like these:
<ol>
<li>Single Post: <code>http://example.com/my-category/sample-post.html</code>.</li>
<li>Category: <code>http://example.com/my-category</code>.</li>
<li>Archive: <code>http://example.com/2009/05</code>.</li>
<li>Page: <code>http://example.com/about</code>.</li>
</ol>
After activation of the plugin:
<ol>
<li>Single Post: not modified.</li>
<li>Category: <code>http://example.com/my-category/</code>.</li>
<li>Archive: <code>http://example.com/2009/05/</code>.</li>
<li>Page: <code>http://example.com/about/</code>.</li>
</ol>

Permalink Trailing Slash Fixer

Quickly add a trailing slash in the URLs if it's missing in the permalink structure.

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.

Permalink Trailing Slash Fixer vs oik batchmove