WP Forum Server – an open source plugin for the WordPress content management system that allows you to add the discussion forum functionality to an existing WordPress installation.
WP Forum Server is an extended version / fork of an undeveloped plugin called WP Forum.
WP Forum Server offers a complete forum, fully integrated with WordPress, the installation of which requires no additional steps. Using a WordPress database allows blog users full access to the forum without having to create additional profiles.
The forum plugin includes several language versions, the ability to customize your own settings, support for themes and access to basic forum statistics.
The last version of the WP Forum Server was released in 2015.