The fastest and most complete WordPress performance optimization plugin.
https://www.w3-edge.com/wordpress-plugins/w3-total-cache/
Widgets
Get access to data on 4,115,122 websites that are W3 Total Cache Customers. We know of 986,631 live websites using W3 Total Cache and an additional 3,128,491 sites that used W3 Total Cache historically and 360,587 websites in the United States.
Get a list of 4,115,122 websites using W3 Total Cache which includes location information, hosting data, contact details, 986,631 currently live websites and an additional 703,265 domains that redirect to sites in this list. 3,128,491 sites that used this technology previouslyand 360,587 websites in the United States currently using W3 Total Cache.
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