Karix SMS and WhatsApp Notify is now on Shopify Boost the effectiveness of your campaigns on SMS and WhatsApp with a simple plugin. This plugin enables brands to quickly launch meaningful conversations at every touchpoint of their customer journey, increase sales, and invest in adding more value to their customer experience.
Twilio - Brings voice and messaging to your web and mobile applications.
Melrose Labs SMSC Simulator - SMPP SMSC simulator to test SMS messaging applications.
Clockwork SMS - Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Tropo - Tropo is a cloud API for voice and messaging.
Clickatell - Simple, reliable mobile messaging cloud.