WebFactory

Add a guest author to any post without needing to register the guest author as a user on your site.
<h3>Features</h3>
<ul>
<li>✍️ Behaves as if guest authors were regular authors.</li>
<li>👤 Upload your own avatar image instead of using Gravatar.</li>
<li>🌍 Link to a custom page for the guest author.</li>
<li>🔥 Perfect for guest posts.</li>
</ul>
Looking for nicer author boxes with more options? Check out our <a href="https://wordpress.org/plugins/simple-author-box/" rel="ugc">free Simple Author Box</a> plugin.

Guest Author

In my case I needed something that would create the admin part an I can then use it on my custom theme. Definitely saved me some time to create my own custom meta boxes for the posts. Needed only to customize the single post template page to show the guest meta information.

Works perfect


The plugin works as advertised and is quite simple and handy. I have one request though. These days nofollowing the URL might be suitable for some admins. So it is missing.


Feature request: nofollow the guest author URL

Add a guest author to any post without needing to register the guest author as a user on your site.

antocara

Add a box with information about the author of each post after post written by that author. 
This box will display information in bio of each writer’s blog, a link to every post written by this author, avatar, and a series of icons link to author profile on social networks 
are known as Facebooks, Twitter, Google+ and icon for contact by email.
All these data the author of this post are collected from the profile of each author which have incorporated the necessary fields to fill. 
Author Info also has a widget in which appear a list of all components of the blog who have permission to write to the blog. This widget also displays the avatar of the author, 
his name with a link to a list of all posts written by him, the same icons to link to your profile on social networks and the number of written post. 
The box appears with the author’s information after each post is configurableboth in its background color, the color of the lettering and decorative border color of the table below.
Author info is configured for use in multi mode to be available in:
<ul>
<li>Spanish </li>
<li>English</li>
<li>Italian (gracias @cento)</li>
</ul>

CW Author Info

Add a box with information about the author of each post after post, include a widget in which appear a list of all components of the blog

Guest Author vs CW Author Info