wpriders

This plugin will help you categorize the comments on your blog posts.
If you are a food blogger, this plugin is very handy to sort the comments on your recipes, like, for example in “I have made this” and “I have not cooked this”.
You can configure the list of categories from the Settings->Comments Categories page. 
Besides the categories’ list, you can also customize basic look and feel of the comment filtering buttons.
In case the plugin is not working with your theme, please check the FAQ section for more info.
If you need support with this plugin or want to customize it, please submit your request here <a href="https://wpriders.com/contact-us" rel="nofollow ugc">https://wpriders.com/contact-us</a> 
We are not offering free support on wordpress.org

Comments Categories

Add categories for the post comments on your blog

FolioVision

This is a fix of Top Level Category plugin for WordPress 3.1. and further versions. It’s purpose is to provide the same behavior as the original plugin, but in new WordPress versions.
The Top Level Categories plugin allows you to remove the prefix before the URL to your category page. For example, instead of http://foliovision.com/category/work, you can use http://foliovision.com/work for the address of “work” category. WordPress doesn’t allow you to have a blank prefix for categories (they insert <code>category/</code> before the name), this plugin works around that restriction.
This plugin works also if you have a permalink structure like %postname% or %category%/%postname% — this wasn’t possible in the original version. However, this feature might not work properly for child categories at this point. Test carefully!
<a href="http://foliovision.com/support/fv-top-level-categories/" rel="nofollow ugc">Support</a>
<h3>Known Issues / Bugs</h3>
<ol>
<li>Issue with paging and feed URLs when using <code>%postname</code> or <code>%category%/%postname%</code> permalink structure should be fixed.</li>
</ol>
<h3>Uninstall</h3>
<ol>
<li>Deactivate the plugin</li>
<li>That’s it! 🙂</li>
</ol>

FV Top Level Categories

This is a fix of Top Level Categories plugin for Wordpress 3.1. and above.

Comments Categories vs FV Top Level Categories