RelyWP

Automatically purges your Cloudflare cache whenever cache is cleared via the Nginx Helper plugin.
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The full Cloudflare cache is purged if the Nginx Helper “Purge Cache” button is clicked.
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If cache is purged for an individual page via Nginx Helper, then it will also only purge the Cloudflare cache for that page.
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Requires the following plugins to be installed & setup:
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<a href="https://wordpress.org/plugins/nginx-helper" rel="ugc">Nginx Helper</a>
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<a href="https://wordpress.org/plugins/cloudflare" rel="ugc">Cloudflare</a>
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Sync Nginx Helper with Cloudflare

Automatically purge Cloudflare cache whenever Nginx Helper purges cache.

sakisbal

This plugin is not of any use for general themes but is specifically created for 
my main theme perfectPortfolio.

perfectPortfolioHelper

The plugin is not for general use, but its a helper plugin for my main theme

Sync Nginx Helper with Cloudflare vs perfectPortfolioHelper