The plugin is an add-on for the Related Posts by Taxonomy plugin by author keesiemeijer:
http://keesiemeijer.wordpress.com/related-posts-by-taxonomy/
That plugin allows you to show thumbnails or links of related articles in a sidebar. This works for a lot of types of content. For example: posts, products, etc.
Unfortunately, that plugin does not work for pages. This add-on solves that issue by creating taxonomies for pages.
Is this plugin GDPR compliant?
- This plugin doesn’t process, share, send or retain any user data.
- This plugin doesn't track (user) data for analytics (or for any other reason).
- This plugin doesn't save or read cookies.
- This plugin doesn't use 3rd party libraries.
Read this article why plugin authors cannot guarantee 100% compliance.
Please contact a GDPR consultant or law firm with this information to assess if this plugin is compliant.