Denra.com

Ivaylo Tinchev

There are some products or services that cannot be sold directly via shopping cart. This plugin allows your prospective customers to easily request a quotation from you using a simple and easy to use contact form.
It takes lots of efforts to develop and support a plugin. Please send us your feedback and questions to fix your issue before leaving a bad review.
Are you satisfied by using this plugin? Consider leaving a <a href="https://wordpress.org/support/plugin/really-simple-rfq-form-for-woocommerce/reviews/?rate=5#new-post" rel="ugc">5 star review</a>.
If you need support or more information about this free plugin please read the description and the F.A.Q. section below or write in the <a href="https://wordpress.org/support/plugin/really-simple-rfq-form-for-woocommerce/" rel="ugc">Support Forum</a>.
<h3>Features</h3>
<ul>
<li>Simple and easy to use RfQ form with name, email, phone, questions or comments fields.</li>
<li>Uses AJAX submission and the user does not leave the page while sending the request.</li>
<li>Automatically adds the product name, SKU, picture and link in the request message.</li>
<li>Emails the requests using the built-in wp_mail() WordPress function.</li>
<li>No complicated settings. All is setup to go. Simply install it and it works.</li>
</ul>

Really Simple RfQ Form for WooCommerce

Removes the 'Add to cart' button from WooCommerce and adds a simple 'Request for quotation' form on all product pages.

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

Really Simple RfQ Form for WooCommerce vs CSH Callback