wpCache is a caching and performance optimization web app to improve the loading speed of websites. It works with WordPress self-hosted websites and needs to be installed on your website server.
Key features:
100% free.
Paid version includes customer support.
Pricing:
My comment: According to reviews this is the best WordPress cache plugin around. If you need to speed up your website, you need to test this out.
Find out more: https://wpcache.co/
Download it now: https://wpcache.co/wp-content/uploads/2018/01/wpCache1.6.zip
Check reviews of WPCache: https://wpcache.co/reviews/