Mark McNeece of 365i

Environment Indicator adds a prominent visual indicator to the WordPress admin bar showing the current site environment. This high-visibility indicator helps prevent accidental changes on production sites by making the environment instantly recognizable to logged-in users.
Perfect for developers, agencies, and teams managing multiple environments (development, staging, production) across different sites.
<h4>Key Features</h4>
Smart Environment Detection 
* Automatically detects environment using WordPress core constants (<code>WP_ENVIRONMENT_TYPE</code>) 
* Supports popular hosting providers: WP Engine, Pantheon, Kinsta, Flywheel 
* Legacy Bedrock constant support (<code>WP_ENV</code>) 
* Subdomain-based heuristics (dev.example.com, staging.example.com) 
* Manual override option for custom setups
Customization Options 
* Custom Colors – Match your branding or personal preferences for each environment 
* Custom Labels – Rename DEV/STAGING/LIVE to LOCAL, UAT, PRODUCTION, or anything you prefer 
* Role-Based Visibility – Control which user roles can see the indicator (great for client sites)
Visual Enhancements 
* Admin bar label (always visible) 
* Full admin bar background coloring (high-visibility option) 
* Browser tab prefix – instantly identify environments across multiple tabs 
* Top border in wp-admin screens 
* Admin footer watermark 
* Dashboard widget showing environment status and system information
Export/Import 
* Export settings as JSON to deploy across multiple sites 
* Import settings from JSON file 
* Perfect for agencies managing client sites with consistent configurations
Multisite Compatible 
* Full support for WordPress multisite installations 
* Network-wide settings when network-activated 
* Per-site settings when activated on individual sites
<h4>How It Works</h4>
Detection runs in this order:
<ol>
<li>WordPress core constant: <code>WP_ENVIRONMENT_TYPE</code></li>
<li>Legacy constant: <code>WP_ENV</code></li>
<li>Hosting provider constants (WP Engine, Pantheon, Kinsta, Flywheel)</li>
<li>Subdomain patterns (dev, staging, test, qa)</li>
<li>Default to LIVE if no detection</li>
</ol>
You can always override automatic detection and manually select the environment.
<h4>Perfect For</h4>
<ul>
<li>Developers – Never accidentally deploy to the wrong environment</li>
<li>Agencies – Manage multiple client sites with consistent environment indicators</li>
<li>Teams – Everyone instantly knows which environment they’re working in</li>
<li>Managed Hosting – Works out-of-the-box with WP Engine, Pantheon, Kinsta, and Flywheel</li>
</ul>
<h4>Zero Impact on Visitors</h4>
The indicator only displays for logged-in users. Public visitors see no performance impact or visual changes.
<h3>Development</h3>
Development of this plugin happens on GitHub: https://github.com/BSolveIT/environment-indicator
Bug reports and feature requests are welcome!

365i Environment Indicator

Displays a color-coded DEV, STAGING, or LIVE indicator in the admin bar to prevent accidental changes on production sites.

Medium Rare

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This plugin will tell you what environment type you are on, and what the debug settings are.
If you have only one version of your site this plugin may not be useful to you.
Make sure every version of your site has its ENV defined in wp-config.php. We support both the new official WP_ENVIRONMENT_TYPE constant, and the community classic WP_ENV.
<pre><code>define( 'WP_ENVIRONMENT_TYPE', 'production' );
</code></pre>
<h4>Medium Rare</h4>
We hope you like this Medium Rare plugin. We take a lot of pride in our work, and try to make it the absolute best we can.
This plugin is fully free, and will never have a pro version. A small gift, from us, to you.
If you’re interested in our other plugins, and future plugins, we invite you to visit our website at <a href="https://mediumrare.dev/" rel="nofollow ugc">mediumrare.dev</a>. Our newsletter is the best way to never miss a Medium Rare plugin launch.
<h4>Contribute</h4>
If you want to contribute, development takes place on <a href="https://github.com/Brugman/environment-debug-admin-toolbar" rel="nofollow ugc">GitHub</a>.

Environment & Debug Bar

Display your environment and debug info in the toolbar.

365i Environment Indicator vs Environment & Debug Bar