mallsop

List site contributors allows you list your site’s contributors and authors. 
Just add the shortcode [listsitecontributors] to a page on your blog. 
Optionally you can use the User Photo Plugin (https://wordpress.org/extend/plugins/user-photo/) for images, 
otherwise Avatars will be used.

List Site Contributors

sujitkumar87

WP Post Contributors plugin allows you to add more than one author to the post who have contributed. 
The contributors meta will apear just aside of your post body. Just check the authors who have contibuted. 
And update the post to save it.
Features of Custom News Widget:
<ul>
<li>User friendly and easy to use.</li>
<li>Tested with other popular plugins.</li>
<li>Add authors to the post easily.</li>
</ul>

WP Post Contributor

WP Post Contributors plugin allows you to add more than one author to the post who have contributed.

List Site Contributors vs WP Post Contributor