HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Invoca - Call tracking & analytics software
HelpNinja - Simple & Affordable help desk
CallTrackingMetrics - Know who is calling and how they found you. Maximize the return on your advertising.
SupportYourApp - Connecting talented people with the blooming IT industry to help them grow faster by outsourcing support.
Marchex - Marchex is a mobile advertising analytics company that connects online behavior to real-world, offline actions.