Single Sign On For TNG
Single Sign On For TNG automates the login to the genealogy program TNG by Darrin Lithgoe.
Solid choice
Single Sign On For TNG is a solid plugin choice in 2026, with a few things worth checking first. It runs on 20+ sites and was last updated 1 month ago, and scores 67/100 on our health check.
- Tested with the latest WordPress (7.1)
- Small user base (20+ active installs)
- Very few reviews so far
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 For TNG stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| family tree | #10 |
| genealogy | #6 |
| Single Sign-on | #13 |
| the next generation | #95 |
| tng | #1 |
Version adoption
Share of active sites per release.
About Single Sign On For TNG
From the official readme · v2.2.0Description
Single Sign On For TNG improves the user experience when WordPress and the TNG Genealogy Software are on the same or different servers.
User accounts for both systems are managed through the WordPress user registration system. This includes account creation, deletion and password change.
Logging in and out of the users WordPress account automatically logs in and out of their account in TNG.
This plugin makes no attempt to visually incorporate TNG into the WordPress theme. But TNG’s template feature allows the developer to design a visual for TNG which is consistent with that of the WordPress Site.
Installation
Install and activate the plug-in in the normal manner. Then go to Settings, Single Sign On For TNG and configure the settings. See the HELP section on that page for additional information.
Frequently asked questions
Is this plug-in easy to set up?
Yes. See the screenshots. The full path and url to your TNG site is required plus a one-time key generation.
How does this plugin process WordPress registrations?
When a person applies for an account (ie: registers) at the WordPress site an entry for the person is added in both WordPress and TNG, awaiting separate approval. Approving the WordPress registration does NOT approve the TNG one. That must be done separately in TNG’s administrator panel, so that you can decide whether or not to give them TNG access, and if so, at what level, branch, etc. You may want to use one of the many plugins that allow additional questions in the WordPress registration form so that you can decide how to proceed with registration in WordPress and TNG based on the answers.
How does this plugin deal with existing WordPress users that are not in TNG?
An optional setting allows for the automatic addition of a WordPress user to the TNG account system, based on their role. This occurs transparently when they log in to the WordPress site. Multiple matching roles can be defined. The user’s TNG account is automatically given active Guest privileges. The Admin is sent an email alerting that this has happened so that the TNG privilege level can be adjusted if needed.
I have users in TNG whose account in WordPress has a different password. How should I proceed?
No action is required. The plugin will synchronize the password in TNG with that in WordPress automatically when the user logs in. This assumes that the user name in WordPress and TNG are the same. If not another user will be added to TNG with the right user name. It is up to the administrator to deal with any residual user accounts in TNG that are now obsolete in this eventuality.
Does this plug-in visually integrate with my WordPress site?
No, that is not its intent. It provides functionality to automatically log in to and out of the TNG Family Tree site when the user logs in to or out of the WordPress site. The template functionality within TNG allows you to give it an equivalent appearance.
Does the automatic signon to TNG create a password security risk?
No. The password is stored in a browser cookie in encrypted form using OpenSSL. The key used for encryption/decryption is unique to each installation and not publicly accessible.
Changelog
This version fixes a critical security vulnerability. Upgrade immediately.
2.2.0
Fixed a continuing vulnerability not completely patched in V2.1.0 (Thanks to researcher moonge for tracking this down.)
Fixed an issue in the settings where the encryption key was not being displayed after an entry error.
Improved the password change form to disallow submission on no provided password, or passwords given don’t match.
2.1.0
This is an important update to correct a vulnerability reported as CVSS 3.1: 9.8 (Critical) – CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Other code changes to make the plugin pass WordPress’s Plugin Check
2.0.0
Provides an alternate way to communicate with TNG that does not require direct TNG database access. The TNG installation can be anywhere accessible over the Internet.
Improved Settings screen.
Allowed for optional custom logout function from TNG.
Improved plugin data cleanup on deletion of the plugin.
Provided support for optional Forminator forms to implement Registration, Log In, Profile Management and Lost Password Recovery.
1.1.3
Made deactivating the plugin clean up the TNG .htaccess file.
Repaired a bug related to redirecting login, logout and registration operations from TNG to WordPress.
Other cosmetic improvement.
1.1.2
Made relative paths to the TNG installation always treated as relative, rather than converting them to absolute. This deals with an issue with unusual directory installation structures.
1.1.0
Added an optional feature to add existing WordPress user accounts to TNG on log in, based on a role match.
Screenshots
For developers
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Best Single Sign On For TNG alternatives
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FAQ
Single Sign On For TNG: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 11, 2026
Is Single Sign On For TNG free?
Yes. Single Sign On For TNG is free to download and use from the official WordPress.org plugin directory.
Is Single Sign On For TNG safe to use in 2026?
Single Sign On For TNG is a solid plugin choice in 2026, with a few things worth checking first. It runs on 20+ sites and was last updated 1 month ago, and scores 67/100 on our health check.
How many websites use Single Sign On For TNG?
Single Sign On For TNG is active on 20+ WordPress websites and has been downloaded 2,089 times since it launched in October 2024. It was downloaded 171 times in the last 30 days.
Does Single Sign On For TNG work with WordPress 7.1?
Yes. The developer has tested Single Sign On For TNG up to WordPress 7.1.3, the latest release. It requires WordPress 6.6.1 or newer.
What PHP version does Single Sign On For TNG need?
Single Sign On For TNG requires PHP 7.0 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Single Sign On For TNG last updated?
The latest version, 2.2.0, was released on August 29, 2026 (1 month ago).
Who makes Single Sign On For TNG?
Single Sign On For TNG is developed and maintained by Colin Stearman.
What are the best alternatives to Single Sign On For TNG?
The most popular alternatives to Single Sign On For TNG are Genealogical Tree (600+ installs), WP Family Tree (100+ installs) and Genealogy (50+ installs).
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