Facebook Tracking extension allows hosting FB js on your server to help satisfy the PageSpeed recommendation for leverage browser caching. This extension is only available with PoweredCache Premium.
Google Tracking extension allows hosting Google scripts (such as analytics) on your server to help satisfy the PageSpeed recommendation for leverage browser caching. This extension is only available with PoweredCache Premium.
This extension purges the cache from the Varnish server if your website running with a Varnish. The varnish extension is only available with premium.
What is Heartbeat API? The Heartbeat API is a simple server polling API built into WordPress, allowing near-real-time frontend updates. What does this extension do? By default, Heartbeat API ticks every 15 seconds on post edit pages and every 60 seconds on the dashboard. Heartbeat extension allows you to manage this frequency.
Cloudflare extension allows purging Cloudflare cache within WordPress. If your website is working with Cloudflare, highly recommended enabling this extension.