Groundworx

Groundworx GTM is a lightweight plugin that cleanly adds Google Tag Manager (GTM) to your WordPress site.
It uses core WordPress hooks like <code>wp_head</code> and <code>wp_body_open</code>, ensuring compatibility and avoiding messy theme edits.
Features: 
* Injects GTM scripts in the proper locations (<code><head></code> and after <code><body></code>) 
* Option to disable tracking for logged-in users, by user role 
* No ads, no tracking — just works
<h3>License</h3>
GPLv2 or later

Groundworx GTM – Simple Insert for Google Tag Manager

Cleanly inject Google Tag Manager (GTM) into your site using WordPress-native hooks. No tracking for selected user roles.

Webmaster

Speeds up Google Tag Manager integration by providing customisable and importable GTM JSON, adding tag manager scripts to the header & body and setting up Javascript dataLayer functions for Contact Form 7 integration.

PLX Lead Reporting

Speeds up Google Tag Manager integration and provides dataLayer functions for Contact Form 7 integration.

Groundworx GTM – Simple Insert for Google Tag Manager vs PLX Lead Reporting