Free to download, W3 Total Cache is used by many well-known companies (i.e. Yoast.com and AT&T). It promises improved server performance, reduced download times, improved conversion rates, and promises a tenfold improvement of your overall site performance when fully configured. The plugin supports mobile, provides a CDN, and even integrates browser caching. All-in-all, this plugin seems to provide the most in settings and options without compromising the ease in setup.
WP Super Cache will cache your files through one of three ways: mod_rewrite (the fastest method available and meant for the advanced user), PHP (the second fastest method and recommended for most users), and Legacy caching (mainly used to cache pages for known users). All three of these utilize disk caching, which is generally slower than the alternative of memory caching (unless your server boasts a solid state drive, or SSD, which can allow disk caching to exceed memory caching speeds).
WP-FFPC (WordPress Fast Full Page Cache) uses memory caching as its default option, which is usually a faster alternative to disk caching. It offers several methods for memory caching, including APC, APCu, xCache, PHP memcached, and Nginx memcached. Other features include cache exclude options, optional cache for logged-in users, and varying expiration times for posts, taxonomies, and home pages. While this plugin is free to download, it does require some experience with the caching applications listed above to complete setup and configuration. However, our Heroic Support® team can gladly provide Best Effort Support for installation of the plugin.
WP-FFPC features WordPress Network support, which allows for different per site cache settings. You can either set the plugin to use the network-wide settings, which will then be used for all of the sites, or only activate it for some of the sites without affecting the others. Unlike the other plugins on this list, this plugin does not support a CDN, and does not come with additional minification features. Instead, WP-FFPC is a simple and focused plugin that, if configured correctly, can provide an incredible speed boost for your site.
Caching is the one of the simplest and most effective ways to speed up your WordPress site. Additional plugins on any WordPress site do open the door to security vulnerabilities, which is why our Heroic Support® team always recommends keeping your plugins and themes updated. For other ways of improving your WordPress site, check out our additional resources regarding the best WordPress security plugins to protect your site, as well as general WordPress security tips on our blog. While themes, plugins, and custom modifications are not covered with our fully managed Heroic Support®, our team will always provide Best Effort Support for installing and troubleshooting plugins for WordPress, 24/7/365.
Want WordPress without the hassle? Check out WordPress Without Limits, a managed WordPress solution, with one-click staging, one-click backup restoration, automatic updates, automatic backups, and free SSL.