Rhys Wynne

This plugin adds to Profile Pages an extended “Author Bio”. This allows users to add more information to what they’d feel comfortable adding underneath the post. This Author Bio can be displayed on the author page, as opposed to the standard “Author Description”.
This plugin is a framework, so requires a bit of PHP skill and experience in template editing to make it work.
<ul>
<li>For more features including Google Rich Snippet Integration, check out <a href="http://bloggingdojo.com/wordpress-plugins/author-plus-premium-wordpress-plugin/" rel="nofollow ugc">Author+ Premium WordPress Plugin</a></li>
<li>Blogging Tutorials and WordPress Plugins at <a href="http://bloggingdojo.com/" rel="nofollow ugc">The Blogging Dojo</a></li>
</ul>
<h3>Usage Instructions</h3>
The best place to use this plugin is on the author.php page. I have included a framework for using this plugin.
To begin with, on <code>author.php</code>, add this line. This will get the information on the author.
<pre><code>$author = wp_authorplus_get_user_on_author_page();
</code></pre>
You can then use the standard <code>echo $author->display_name;</code> and similar notation as shown in (The WordPress Codex)[https://codex.wordpress.org/Author_Templates#Using_Author_Information].
To call the extended author descriptions, use <code><?php wp_authorplus_extended_author_bio($author->ID); ?></code> anywhere outside the WordPress Loop, but after you declare $author on wp_authorplus_get_user_on_author_page().
Any questions, please <a href="http://bloggingdojo.com/contact-us/" rel="nofollow ugc">Contact Me</a>

Plugin Name:  Author+ (Lite)

This plugin adds to Profile Pages an extended "Author Bio". This allows users to add more information to what they'd feel comfortable a …

Automattic

Daniel Bachhuber

Gary Jones

Mohammad Jangda

Assign multiple bylines to posts, pages, and custom post types via a search-as-you-type input box. Co-authored posts appear on a co-author’s archive page and in their feed. Co-authors may edit the posts they are associated with, and co-authors who are contributors may only edit posts if they have not been published (as is core behavior).
Add writers as bylines without creating WordPress user accounts. Simply <a href="https://github.com/Automattic/Co-Authors-Plus/wiki/Creating-and-editing-guest-authors" rel="nofollow ugc">create a guest author profile</a> for the writer and assign the byline as you normally would.
On the frontend, use the <a href="https://github.com/Automattic/Co-Authors-Plus/wiki/Template-tags" rel="nofollow ugc">Co-Authors Plus template tags</a> or the <a href="https://github.com/Automattic/Co-Authors-Plus/wiki/Blocks" rel="nofollow ugc">block editor blocks</a> to list co-authors anywhere you’d normally list the author.
<h3>Documentation</h3>
<ul>
<li>Usage — themer and site-owner guides live on the <a href="https://github.com/Automattic/Co-Authors-Plus/wiki" rel="nofollow ugc">GitHub Wiki</a>: template tags, blocks, guest author management, and multisite.</li>
<li>Developer reference — lives in-repo under <a href="./docs/" rel="nofollow ugc"><code>docs/</code></a> (not bundled in the distribution ZIP):
<ul>
<li><a href="./docs/filters.md" rel="nofollow ugc">Filters and actions</a></li>
<li><a href="./docs/rest-api.md" rel="nofollow ugc">REST API</a></li>
<li><a href="./docs/upgrading-to-4.0.md" rel="nofollow ugc">Upgrading to 4.0</a></li>
</ul>
</li>
</ul>
Co-Authors Plus is an almost complete rewrite of the <a href="https://wordpress.org/plugins/co-authors/" rel="ugc">Co-Authors</a> plugin originally developed by Weston Ruter (2007). The original plugin was inspired by the ‘<a href="https://txfx.net/2005/08/16/new-plugin-multiple-authors/" rel="nofollow ugc">Multiple Authors</a>‘ plugin by Mark Jaquith (2005).

Co-Authors Plus

No support at all , also it doesn't work with wpml

No Support - Not compatible with WPML

Not working

Works!

I rarely ever give 1 star reviews, but developers who take over a plugin - making a breaking change that took a while to resolve - and then refuse to follow standard practice by providing a changelog (despite requests) for future updates, cannot be trusted.

Avoid at all costs.

Cannot trust developers

Assign multiple bylines to posts, pages, and custom post types with a search-as-you-type input box.

Plugin Name: Author+ (Lite) vs Co-Authors Plus