John

This plugin enables you to manage your projects from the WordPress interface you are already comfortable with. Easily create and track the progress of projects and tasks.

WP-Trac

This plugin allows users to manage projects and tasks.

johnciacia

This plugin enables you to manage your projects from the 
WordPress interface you are already comfortable with. Easily 
create and track the progress of projects and tasks.
If you are having issues with this plugin you may submit a comment <a href="http://www.johnciacia.com/propel/" rel="nofollow ugc">here</a> or ask on the <a href="https://wordpress.org/tags/propel" rel="ugc">WordPress forum</a>.

WP-Trac vs Propel