ProTexting - ProTexting offers mobile marketing tools for businesses to communicate with their audience via SMS & MMS campaigns.
Invoca - Call tracking & analytics software
Clickatell - Simple, reliable mobile messaging cloud.
CallTrackingMetrics - Know who is calling and how they found you. Maximize the return on your advertising.
ShoutOUT - All in one business texting tool to send personalized alerts, promotions, reminders, short links and marketing campaigns, for any SMEs (hotels, restaurants, education, non profits, Woocommerce, banks, healthcare, agencies, supermarkets, weddings)
Marchex - Marchex is a mobile advertising analytics company that connects online behavior to real-world, offline actions.