SEO based plugins from Yoast.
https://yoast.com/wordpress/seo/
Widgets · WordPress Plugins
Get access to data on 21,587,647 websites Yoast Plugins Customers. We know of 9,173,848 live websites using Yoast Plugins and an additional 12,413,799 sites that used Yoast Plugins historically and 1,332,847 websites in the United States.
Yoast Plugins websites that are also using other technologies.
Get a list of 21,587,647 websites using Yoast Plugins which includes location information, hosting data, contact details, 9,173,848 currently live websites and an additional 1,312,651 domains that redirect to sites in this list. 12,413,799 sites that used this technology previouslyand 1,332,847 websites in the United States currently using Yoast Plugins.
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