Vortica

Custom CSS to External File is a lightweight WordPress plugin that automatically moves the Custom CSS from the WordPress Customizer to an external CSS file. This improves website performance by reducing inline CSS and ensures that your custom CSS remains persistent even if the Customizer settings are reset.
<h3>Features</h3>
<ul>
<li>Saves Customizer CSS to an external file automatically.</li>
<li>Improves website performance by removing inline styles from the <code><head></code>.</li>
<li>Ensures CSS persistence, even if Customizer data is lost.</li>
<li>Provides an option in “Tools > Custom CSS to External File” to view the saved CSS.</li>
<li>Adds an activation setting to enable or disable external CSS usage.</li>
<li>Easy access to plugin settings via a link on the plugin page.</li>
</ul>

Custom CSS to External File

A simple plugin that moves the WordPress Customizer CSS to an external file, improving performance and ensuring CSS persistence.

ThemeHunk

Hunk Companion contain all features which are required to create a complete website. Main motive behind this plugin is to boost up functionality of ThemeHunk themes. This plugin will work for Gogo, Almaira and upcoming ThemeHunk themes.
Key Features:-
Features: 
– Add service section 
– Add Team Section 
– Add clients-and-testimonials section 
– Add about-us section 
– Add slider-typewriter section 
– Add call-to section 
– Add woocommerce section 
– Add portfolio section 
– Add pricing section 
– Add Ribbon section 
– Add blog section 
– Add contact-us section 
– Add social section 
– Add Homepage Layout section 
– Add Product Filter 
– Add Categories Section 
– Add Instagram Section 
– Add Hero Slider
Not all but required features will be added to particular theme.

Hunk Companion

Nice Plugin

Adds customizer settings and controls to the Gogo Theme.

Custom CSS to External File vs Hunk Companion