Single Sign-On – Professional SSO solution for WordPress
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.
Consider an alternative
Single Sign-On shows warning signs in 2026 — compare the alternatives below before installing. It runs on 20+ sites, is rated 5/5 and was last updated 5 years ago, and scores 31/100 on our health check.
- Small user base (20+ active installs)
- Very few reviews so far
- No update in 4 years
- Only tested up to WordPress 5.9 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Single Sign-On stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| access-control | >100 |
| single login | >100 |
| single password | >100 |
| Single Sign-on | >100 |
| sso | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 5 from 1 reviews
About Single Sign-On
From the official readme · v2.1.2Description
WordPress Single Sign-On
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
- Reduces user abandonment rates,
- Seamless transition for users from one blog to another,
- Installed in just a few minutes,
- No need to setup your own server,
- State-of-the-art security environment,
- 100% compliant with all US & EU data protection laws,
- Works across different and independent domains or databases,
- Integrates with our turnkey plugins for OpenCart and Magento,
- Integrates with any website using our SSO API,
- Top-notch support and integration help.
State-of-the-art security
Single Sign-On is powered by the OneAll User Integration platform, a state-of-the-art security environment that is 100% compliant with all US & EU data protection laws – including GDPR – and used by more than 300,000 websites worldwide – including small websites, growing startups and large corporate enterprises.
Works across different websites and platforms
The extension is fully compatible with our other SSO plugins like per example for OpenCart or Magento.
Just install the extensions for WordPress and OpenCart or Magento and easily create a single sign-on network between multiple platforms.
Optionally you can also use our SSO API to create a single sign-on network between your WordPress and any other website.
Dedicated support team
A dedicated support teams is there to assist you if you should have any questions or custom needs.
Professionally developed and maintained
Single Sign-On is maintained by OneAll, a technology company offering a set of web-delivered tools to simplify the user integration into business and personal websites and apps.
Installation
Plugin Installation
- Upload the plugin folder to the “/wp-content/plugins/” directory of your WordPress site,
- Activate the plugin through the ‘Plugins’ menu in WordPress,
- Visit the “Settings\Single Sign-On” administration page to setup the plugin.
API Connection
In order to enable the plugin you must connect with the OneAll API and create a free account at https://app.oneall.com
Frequently asked questions
Where can I report bugs, leave my feedback and get support?
Our team answers your questions at: https://support.oneall.com/forums/
Changelog
2.1.2
- Fix test for autocreating accounts
2.1.1
- String masking changed
2.1.0
- Credentials synchronization added
- User lookup improved
- Log filters added
- Log levels added
2.0.1
- Endless loop with admin accounts fixed
2.0.0
- Complete review of the plugin
1.0.1
- Setup simplified
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Single Sign-On alternatives
All access-control plugins →
FAQ
Single Sign-On: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 18, 2026
Is Single Sign-On free?
Yes. Single Sign-On is free to download and use from the official WordPress.org plugin directory.
Is Single Sign-On safe to use in 2026?
Single Sign-On shows warning signs in 2026 — compare the alternatives below before installing. It runs on 20+ sites, is rated 5/5 and was last updated 5 years ago, and scores 31/100 on our health check.
How many websites use Single Sign-On?
Single Sign-On is active on 20+ WordPress websites and has been downloaded 21,903 times since it launched in December 2017. It was downloaded 56 times in the last 30 days.
Does Single Sign-On work with WordPress 7.1?
Single Sign-On is officially tested up to WordPress 5.9.19, while the latest release is 7.1.3. It may still work, but try it on a staging site first.
When was Single Sign-On last updated?
The latest version, 2.1.2, was released on February 11, 2022 (5 years ago).
Who makes Single Sign-On?
Single Sign-On is developed and maintained by Claude.
What are the best alternatives to Single Sign-On?
The most popular alternatives to Single Sign-On are PublishPress Capabilities:… (100K+ installs), Content Control (40K+ installs) and Restrict User Access (10K+ installs).
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