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Salesbox – The Best CRM for WordPress and SMEs
Begin catching the hot website visitors with Salesbox lead generation forms for WordPress. Salesbox CRM for WordPress and SMEs lets you choose to add any standard data field or any custom field from contacts, companies and prospects to your Contact 7 forms by Salesbox.
Salesbox CRM for WordPress and SMEs also allows you to add dropdown to let your visitor choose what they are interested in so it’s clear when you begin following up your new leads. Salesbox CRM for SMEs adds the new leads directly to the collaboration section called Unassigned and pings your users in real time that a new lead has arrived.
Allow your users to assign the new leads to themselves or choose to distribute the leads to the proper person.

Salesbox forms

Begin catching website visitors with Salesbox CRM's dynamic Contact 7 forms for WordPress and get them added automatically to Salesbox CRM.

PluginsPoint

This is an extremely very simple contact form with AJAX which you can use whether in posts or in pages very easily. Using this, site’s admin will get the email. You just need to put the shortcode [kento_contact_form] in any page/post. Email will be sent to admin without page refresh.
Live Preview: http://pluginspoint.com/
<h4>Features</h4>
<ul>
<li>Contact form with ajax.</li>
<li>Shortcode System.</li>
<li>Easy to use and update</li>
</ul>

Salesbox forms vs Kento Ajax Contact Form