Codeinwp.com (27.12.2016)
WP Fastest Cache is a popular free WordPress caching plugin that’s been around for a while. Its design and feature set is simple and functional, but it gets the job done without much fuss.
WP Rocket vs Hummingbird vs WP Fastest Cache vs Comet Cache
WP Fastest Cache is compared with WP Rocket which is a paid cache plugin.
https://www.codeinwp.com/blog/finding-top-wordpress-caching-plugin/