Websorcery

This plugin automatically hides the “Add to Cart” button for WooCommerce products that have no price set (or empty price). Instead, it displays a customizable “Request Price” button that opens a lead capture modal.
Features: 
* Automatic detection of checking empty prices. 
* Lead capture form (Name, Phone). 
* Email notifications. 
* Customizable design via settings. 
* GDPR compliant checkbox. 
* Localization support (i18n).

Websorcery Request Price

Replaces "Add to Cart" with "Request Price" button for lead generation.

cmssuperheroes

CSH Callback WordPress Plugin – All in One Solution. 
 
<h3>Features</h3>

<ul>
<li>CSH Callback Shortcode </li>
<li>CSH Callback Widget </li>
<li>Callback Elements for Visual Composer </li>
<li>Modal form</li>
<li>Enable / Disable Fields</li>
<li>ReCaptcha</li>
<li>Notification Email after a callback request success</li>
<li>Admin manage all request callback</li>
<li>Unlimited customized Styles</li>
<li>
 Documented All our product come bundled with step by step documentation covering instalation and setup.</li>
<li>
 Translation Ready All our products are translation ready using Poedit tool with instructions in bundled documentation.</li>
<li>
 Regular Product Updates CSH Callback Plugin is kept up to date with the latest WordPress versions</li>
<li>
 Customer Support Provided Mon – Fri through external support system at <a href="https://cmssuperheroes.com/ticket" rel="nofollow ugc">https://cmssuperheroes.com/ticket</a> Support covers setup, product features, and bug fixes only.</li>
</ul>
And many interest features will be updated soon.

CSH Callback

Add a callback request form to wordpress site

Websorcery Request Price vs CSH Callback