MessageMetric

<a href="http://www.messagemetric.com" rel="nofollow ugc">Message Metric</a> call tracking empowers businesses to find and identify the marketing campaigns that create phone calls. Our WordPress plugin is very easy-to-install and allows you to dynamically swap one or more phone numbers displayed on any page of your website based on referral sources. We can track how visitors find your website and call your business.
For example, you can have one or more tracking numbers to do things like:
<ul>
<li>Track all calls on 1 number.</li>
<li>Track visitors from PPC ads. (Direct integration w/ Google Adwords conversions)</li>
<li>Track visitors from Organic Search.</li>
<li>Track direct referral visitors from sites like Yelp, Foursquare, Directories, etc.</li>
</ul>
To get started you simply install the wordpress plugin, connect to your Message Metric Call Tracking Account, choose the JavaScript option and the number or numbers you want replaced with any rules and we’ll automatically replace the phone number on your website with the appropriate tracking phone number based on your rules.
<ul>
<li>Learn more about Message Metric at: <a href="http://www.messagemetric.com" rel="nofollow ugc">http://www.messagemetric.com</a></li>
</ul>

MMA Call Tracking

nimbata

This plugin adds the Dynamic Number Insertion (DNI) script for Nimbata’s call tracking service. Discover which sources, marketing activities, keywords and more are driving phone calls and subsequent conversions.
Our WordPress call tracking plugin can be setup in minutes and allows you to dynamically swap your site’s phone number with one of your private Nimbata tracking numbers. When a visitor calls your tracking number, we’ll correlate the call with the source, session or campaign details you’ve setup in the Nimbata app.
To get started with Nimbata’s WordPress plugin, you’ll need an active Nimbata account. Learn more about Nimbata at http://www.nimbata.com.

Nimbata Call Tracking

Dynamically swap your site's phone number with a nimbata tracking numbers. Track which sources generate phone leads to your business.

MMA Call Tracking vs Nimbata Call Tracking