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

Authors Widget shows the list or cloud of the authors in the sidemenu.

Solves the co/multi-author problem without modifying the theme. Uses a custom taxonomy, "Byline," that replaces the Display Author.

Share post ideas with writers, suggest them writing topics and keep track of the posts ideas with a to-do list.

Auto-Schedule Posts allows users to separate their writing schedule from their publishing schedule - write when you want and have posts publish at the …

WP Amazon Ads - allows you to easily insert Amazon product listings into your WP posts, and earn commission from sales.

The plugin add a widget and a shortcode in order to show authors of an article. It is compatible with Co-Authors Plus.

This plugin enables you to have 2 titles for 1 post : one on the post page, the other to be used everywhere else.

Add an Co-Authors facet to FacetWP

Post Co-Authors plugin allows you to select more then one authors in any post or custom post type.

Add 'My Posts' to the admin menu. Perfect for multi-author blogs.

GPMA provides a straightforward solution to properly add Google+ Authorship markup to the head of each post and page on a multi-authored site.

A collaboration tool to integrate TogetherJS in to WordPress.

A Author based twitter widget, made to help multi author blogs have individual twitter widgets for their authors.

A quick way to remember post topics for single or multi-author blogs