Co-Authors Plus
Assign multiple bylines to posts, pages, and custom post types via a search-as-you-type input box
Tag Plugin: multi author
Authors Widget
Authors Widget shows the list or cloud of the authors in the sidemenu.
Byline
Solves the co/multi-author problem without modifying the theme. Uses a custom taxonomy, "Byline," that replaces…
Auto-Schedule Posts
Auto-Schedule Posts allows users to separate their writing schedule from their publishing schedule – write…
Posts To-Do List
Share post ideas with writers, suggest them writing topics and keep track of the posts…
WP Amazon Ads
WP Amazon Ads – allows you to easily insert Amazon product listings into your WP…
Co-Authors Widget
The plugin add a widget and a shortcode in order to show authors of an…
WP Multiple Titles
This plugin enables you to have 2 titles for 1 post : one on the…
Plugin Name: Author+ (Lite)
This plugin adds to Profile Pages an extended "Author Bio". This allows users to add…
Post Co-Authors
Post Co-Authors plugin allows you to select more then one authors in any post or…
Extend Co-Authors Plus for FacetWP
Add an Co-Authors facet to FacetWP
My Posts
Add 'My Posts' to the admin menu. Perfect for multi-author blogs.
GooglePlus Multi-Authorship
GPMA provides a straightforward solution to properly add Google+ Authorship markup to the head of…
Author Based Twitter Widget
A Author based twitter widget, made to help multi author blogs have individual twitter widgets…
Collaboration
A collaboration tool to integrate TogetherJS in to WordPress.