palessit

The plugin is an improved version of the “Cloudflare Page Cache” plugin. The plugin does not cache pages for logged-in users by default. You can disable caching for some URLs and for users with certain cookies (use the constants BYPASS_COOKIES_EXTRA and NON_CACHEABLE_URLS_EXTRA for the settings). 
For the plugin to work, you need to have a Cloudflare account with special settings. To purge the cache by the button, you need to set Cloudflare API settings in the plugin (CF_EMAIL – From https://dash.cloudflare.com/profile, CF_API_KEY – Global API Key from https://dash.cloudflare.com/profile, CF_ACCOUNT_ID, CF_NAMESPACE_ID). 
In the Сloudflare account, you need to create a worker, for details go https://github.com/palessit/cloudflare-cache-page. The plugin can preload cache on Cloudflare.

Page Cache on Cloudflare

The fastest cache pages on Cloudflare with purge by button and automatic. You can specify URLs and cookies to exclude caching.

WESLINK

CloudFlare Flexible SSL needs some tiny Modification to get not into a redirect loop. This Plugins makes your WordPress Site ready to use Cloudflare SSL and prevents the common SSL infinite loop Problem.
<a href="https://weslink.de/blog/" rel="nofollow ugc">WordPress and SSL </a>.

Cloudflare SSL by Weslink

we us it for our clients and like it :-)

Plugin to enable CloudFlare Flexible SSL for Wordpress and to prevent the Redirect Loop

Page Cache on Cloudflare vs Cloudflare SSL by Weslink