Best WordPress Plugins for Faster Page Loading: "WP Super Cache generates static html files from your dynamic WordPress blog. When a html File is generated your web server will serve that file instead of processing the comparatively heavier and more expensive WordPress php scripts. The static html files will be served to the vast majority of your users, but because a user’s details are displayed in the Comment form after they leave a comment those requests are handled by PHP. This plugin is found to be very useful for all the bloggers using them and is the largest downloaded plugins among all the plugins listed to lower down a bog’s loading time.
#2: W3 TOTAL CACHE