CallRail
http://www.callrail.com

CallRail is a call tracking platform that brings enterprise-level call analytics to businesses and agencies. CallRail makes it easy to track which marketing sources and keywords make your phone ring. We provide call tracking, recording, and analytics for PPC, SEO, web, and offline marketing campaigns. With CallRail, you can create tracking phone numbers instantly, get reports in real time, and increase your advertising ROI by learning which campaigns and keywords deliver valuable phone leads.