ProTexting - ProTexting offers mobile marketing tools for businesses to communicate with their audience via SMS & MMS campaigns.
Tropo - Tropo is a cloud API for voice and messaging.
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)
Melrose Labs SMSC Simulator - SMPP SMSC simulator to test SMS messaging applications.
Trumpia - SMS Marketing and Marketing Automation software for Mass SMS, internal communications & emergency alerts. #1 Text Messaging Service used by Fortune 500s.
Skebby - Skebby is a leading and best SMS messaging solution providing platform that allows you to send thousands of messages to your customers around the globe.