1. MessageMedia offers SMS software and solutions for businesses.

  2. TextMagic is a business text-messaging service for sending notifications, alerts, reminders, confirmations and SMS marketing campaigns.

  3. Digimiles is A2P messaging platform that enables startups, SMEs, businesses and corporate's to market their products and interact with their customers 24/7 effectively.

  4. SMS Gateway is your bridge between the Internet and the world of cell phone SMS text messaging.

  5. Jasmin is a very complete open source SMS Gateway with many enterprise-class features such as:

  6. engageSPARK offers telephony and messaging engagement solutions.

  7. Google Voice gives you one number for all your phones, voicemail organized in an email format, free...

  8. SendBird is messaging-as-a-service.

  9. Serverless WhatsApp API made simple

  10. Chat API & In-App Messaging SDK for Mobile & Web Apps Innovate fast, save development cost and delight users with a scalable, secure and customizable Chat

  11. A low cost and reliable SMS API for developers

  12. SMS messaging service suitable for enterprise, school and business SMS uses. Reliable and fast SMS delivery using SMS APIs and solutions. SMS Gateway providing SMPP, HTTP, Web Service and SMTP APIs plus AlertBroadcast, EmailSMS and WebSMS.