Scott Reilly

By default, the ‘Comments’ section of the ‘Activity’ admin dashboard widget only shows an excerpt for the comments, truncating the content of the comments to the first 20 words while at the same time stripping out all markup.
This plugin adds a link at the end of the comment actions row (the links for the comment that become visible under the comment when you hover over the comment). The “Show more” link, when clicked, will replace the excerpt with the full comment. The full comment will include all markup, including originally utilized markup and changes applied via filters, plugins, etc (such as shortcode expansion, smilies, paragraphing, etc). The full comment can be switched back to the excerpt by clicking the “Show less” link (which replaces the “Show more” link when the comment is expanded).
“In-place expansion” refers to the ability to click the link to see the full comment and it will be presented in place of the excerpt without requiring a page reload or navigation.
NOTE: This plugin only works for users who have JavaScript enabled.
Links: <a href="https://coffee2code.com/wp-plugins/expandable-dashboard-recent-comments/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/expandable-dashboard-recent-comments/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/expandable-dashboard-recent-comments/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>
<h3>Hooks</h3>
The plugin exposes one filter for hooking. Such code should ideally be put into a mu-plugin or site-specific plugin (which is beyond the scope of this readme to explain).
c2c_expandable_dashboard_recent_comments_start_expanded (filter)
The ‘c2c_expandable_dashboard_recent_comments_start_expanded’ hook allows you to configure the ‘Recent Comments’ admin dashboard widget initially display all comments in their expanded state (i.e. not excerpted).
Arguments:
<ul>
<li>$default (boolean): The default state, which is ‘false’ (therefore comments are initially shown excerpted)</li>
<li>$comment (object) : The comment object being displayed</li>
</ul>
Example:
<pre><code>// Initially show dashboard comments fully expanded
add_filter( 'c2c_expandable_dashboard_recent_comments_start_expanded', '__return_true' );
</code></pre>

Expandable Dashboard Recent Comments

Very Cool

Enables in-place expansion of excerpts in the admin dashboard 'Comments' section of the 'Activity' widget to view full comments.

polyxgo

Display recent comments in the sidebar with user avatar/Gravatar support, styles, information, and an active scrollbar for handling numerous comments. 
<a href="https://wordpress.org/plugins/polygon-recent-comments-with-avatar/faq/" rel="ugc">FAQ</a> 
<a href="https://wikipoly.com/en/poly-comments/" rel="nofollow ugc">Support and request additional features as needed</a>

Polygon Recent Comments With Avatar


A new updated version of mine is aimed at expanding features related to discussions and authors on the blog. In this version, new features will be updated and requests from the user community will be accepted. The plugin is currently under review by the WordPress support team, and we will announce as soon as it is approved for release.



Some of the changes are as follows:




Rename the plugin Polygon Recent Comments With Avatar to Poly Comments to better align with the integrated advanced features.



Change the entire structure of the plugin.



Add the shortcode [poly_recent_comments] to display comments within post content, widgets, etc.



Poly Comments

Polygon Recent Comments With Avatar: Recent comments with avatar support, including Gravatar, date, username, user link, and scrollbar.

Expandable Dashboard Recent Comments vs Polygon Recent Comments With Avatar