Authenticate in Wordpress and phpBB at the same time
As of April 2026, PHPBB Single Sign On is a WordPress login plugin with 10 active installations and a 4.4/5 rating from 5 reviews. It has been downloaded 28K+ times in total. Requires WordPress 2.8.0+ and PHP false+. Available on WordPress.org since 2009. Last updated 12 years ago — may have compatibility concerns. Top alternative: WPS Hide Login.
This plugin allows to use the password from a working phpBB installation to log into a WordPress blog. or on the other side to log into phpBB with the WordPress user.
The username for the administration must be the same on the two installations.
Otherwise you will end having admins that have no privileges on the other part.
There is no actual “sync” of the users.
When the app is configured correctly. the app checks that the user who tries to log in is at least registered in one of the systems, if yes, and the password is correct : he’s logged on both systems and his account is created if missing.
On password change it should also set the password on both platforms.
With WP2BB, you can now define that your posts are published in a forum, so that your co…
| WordPress | 2.8.0+ requiredTested up to 3.6.0 |
| PHP | false+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.