isaacwedin

<p>This plugin automatically creates a title for posts that do not have one. If the post contains text, the title is set to the first few characters of the post. For posts without any text content, the title is set to a configurable untitled post string.</p>
<h3>Credits</h3>
<p>This plugin is based on ideas from the Prologue theme and Luke’s Default Post Title plugin.</p>


Titlematic

Automatically generates a title for posts without a title.

ThemeZee

<p>The <em>Custom Archive Titles</em> plugin allows you to change the default texts of archive titles in WordPress.</p>
<h4>Set custom titles on</h4>
<ul>
<li>Category Archives (Category: %s)</li>
<li>Tag Archives (Tag: %s)</li>
<li>Author Archives (Author: %s)</li>
<li>Yearly Archives (Year: %s)</li>
<li>Monthly Archives (Month: %s)</li>
<li>Daily Archives (Day: %s)</li>
</ul>
<h4>Examples</h4>
<ul>
<li>Published in News</li>
<li>Tagged with Books</li>
<li>Posts written by Jane Doe</li>
</ul>
<h4>Requirements</h4>
<p>Your theme has to use <a href="https://developer.wordpress.org/reference/functions/the_archive_title/" rel="nofollow ugc">the_archive_title()</a> for showing archive titles.</p>


Custom Archive Titles

A small and simple plugin to adjust the default texts of archive titles in WordPress

Titlematic vs Custom Archive Titles