Suziwan

Suziwan Referrer Log is a simple yet powerful analytics tool developed in Nice, France, with privacy in mind. Unlike heavy third-party services, this plugin stores visitor source data locally on your server, giving you full ownership of your data.
It is specifically designed to track: 
* External Referrers: See which websites are sending traffic to your site. 
* Full UTM Tracking: Log source, medium, campaign, term, and content for your marketing campaigns. 
* Visitor Metadata: Capture landing URLs, browser languages, and user agents. 
* Data Management: Includes a settings page to easily clear all logs or purge old data (e.g., keep only the last 30 days) to keep your database lean.
Privacy First: 
To comply with global privacy standards like GDPR, this plugin automatically anonymizes IP addresses by masking the last octet before saving them to the database. No personally identifiable information (PII) is stored.

Suziwan Referrer Log

A lightweight, privacy-friendly way to log referrers, UTM parameters, and visitor metadata directly in your WordPress database.

wplabs

Hide Referer for WordPress removes the referer (referrer) from all external links on your blog. It does this by converting all outgoing 
links on your blog using the href.li service and effectively hides your site as origin of the referred link.
For example, Hide Referer for WordPress will convert an external link to wordpress.org, to <a href="https://href.li/?http://wordpress.org" rel="nofollow ugc">https://href.li/?http://wordpress.org</a>.

Advanced WP Hide Referer

Hide Referer for WordPress removes the referer (referrer) from all external links on your blog. It does this by converting all outgoing

Suziwan Referrer Log vs Advanced WP Hide Referer