TextMarks SMS service allows transit agencies, brands, small businesses, churches and other nonprofits to reach communities and customers through mass text messaging and SMS autoresponders. Since 2006, TextMarks' easy to use web interface, robust API and reliable service has enabled thousands of customers to build their businesses, increase employee engagement and deliver timely information to more than 10 Million users in the U.S
ProTexting - ProTexting offers mobile marketing tools for businesses to communicate with their audience via SMS & MMS campaigns.
Kannel - Open Source WAP and SMS Gateway
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)
Ozeki NG SMS Gateway - Ozeki NG SMS Gateway is a powerful, reliable and flexible SMS Gateway application.
Trumpia - SMS Marketing and Marketing Automation software for Mass SMS, internal communications & emergency alerts. #1 Text Messaging Service used by Fortune 500s.
KAPSYSTEM - KAP Computer Solutions Pvt. Ltd.,