byteplant

This plugin uses the Byteplant Phone-Validator API (https://www.byteplant.com/phone-validator/) to check if a phone number is really valid and callable.
<h4>Supported Plugins / Compatible Forms</h4>
The plugin works seamlessly with: 
* Contact Form 7 
* Gravity Forms 
* WPForms 
* Ninja Forms 
* WooCommerce
The plugin can also be easily integrated into any 3rd party form.
<h4>Key Features</h4>
How does it work?
The Phone-Validator real-time validation API provides detailed information for each phone number: 
* Status: VALID/CONFIRMED, VALID/UNCONFIRMED or INVALID 
* Line type: FIXED_LINE, MOBILE, VOIP etc. 
* Geolocation: Region and city 
* Phone number correction and re-formatting according to national and international standards
During the entire validation process, the phone number is not contacted in any way, nor will any phones connected to a line ring.
<h4>Data Protection and Privacy Policy</h4>
Please see the Frequently Asked Questions section.
<h4>Getting Started</h4>
The plugin requires an API Key. Please sign up for an account at 
https://www.byteplant.com/phone-validator/free-trial-registration.html (no credit card required). 
The trial account comes with 100 free credits.

Byteplant Phone Validator

With the Byteplant Phone Validator plugin you can easily verify if a phone number is really valid and callable (https://www.byteplant.

Aman

UPDATE: Ninja Forms 3.0 has now inbuilt integration for Google reCAPTCHA. If you are runnning the latest version of Ninja Forms then you don’t have to install this plugin anymore for reCAPTCHA integration
Adds a Google reCAPTCHA field type to Ninja Forms form builder. 
Forms with a reCAPTCHA will validate the field before successful submission.
How to use it?
<ul>
<li>Upload the plugin to wp-content->plugins directory,</li>
<li>Activate it from wordpress dashboard,</li>
<li>Add the Site Key and Secret from Forms->ReCaptcha,</li>
<li>Edit Form and you will see Google ReCaptcha field under Template Fields</li>
</ul>
Checkout our other plugins 
* <a href="https://webholics.org/downloads/gravity-forms-sendy-addon/?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Gravity Forms Sendy Addon</a> 
 Add user to Sendy using Gravity Forms. 
* <a href="https://webholics.org/contact-form-7-views?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Views for Contact Form 7</a> 
 Display Contact Form 7 Submisions anywhere on your site in table or list view 
* <a href="https://formviewswp.com?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Views for WPForms</a> 
 Display WPForms Entries anywhere on your site in table or list view 
* <a href="https://nfviews.com?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Views for Ninja Forms</a> 
 Display Ninja Forms Submisions anywhere on your site in table or list view 
* <a href="https://ninjapopup.org/?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Popup Addon for Ninja Forms</a> 
 Display Ninja Forms in beautiful popups. 
* <a href="http://codecanyon.net/item/ninja-forms-paypal-standard-payment-gateway/10047955?ref=webholics" rel="nofollow ugc">Ninja Forms Paypal Standard</a> 
 Take payments using Paypal Standard in your Ninja Forms 
* <a href="https://webholics.org/downloads/nf-getresponse-addon/?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Ninja Forms GetResponse Addon</a> 
 Add user to GetResponse using Ninja Forms. 
* <a href="https://webholics.org/downloads/nf-icontact-addon/?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Ninja Forms iContact Addon</a> 
 Add user to iContact using Ninja Forms. 
* <a href="https://webholics.org/downloads/nf-sendy-addon/?utm_source=wordpress-plugin-repo&utm_medium=ninja-forms-recaptcha-repo&utm_campaign=ninja-forms-recaptcha" rel="nofollow ugc">Ninja Forms Sendy Addon</a> 
 Add user to Sendy using Ninja Forms.
<pre><code>Have Suggestion/Feedback
</code></pre>
Please send me your feedback <a href="https://webholics.org/contact/" rel="nofollow ugc">here</a> for any new features you want to see in next version of this plugin.I will be glad to receive feedback.

Byteplant Phone Validator vs reCAPTCHA for Ninja Forms