Single Sign-On is a professional SSO extension that works accross different domains, servers and websites. Installed in just a few minutes.
As of April 2026, Single Sign-On is a WordPress sso plugin with 30 active installations and a 5/5 rating from 1 reviews. It has been downloaded 21K+ times in total. Requires WordPress 3.0+ and PHP false+. Available on WordPress.org since 2017. Last updated 4 years ago — may have compatibility concerns. Top alternative: WPO365 | SEAMLESS WORDPRESS + MICROSOFT….
Single Sign-On for WordPress is a professional SSO extension that automatically creates accounts and signs users in as they browse between multiple and independent WordPress blogs in your network.
Works across different and independent servers, domains and databases. Seamless transition for users from one website to another.
Please note that the central SSO Server is provided by the OneAll User Integration Platform and requires a plan that includes the SSO API.
Advantages
Take away the need for your users to create new accounts or re-enter their authentication credentials when they switch from one of your blogs to another.
Reduce the user abandonment rates by making the transition from one domain to another as seamless as possible.
Features
| WordPress | 3.0+ requiredTested up to 5.9.13 |
| PHP | false+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.