1. Brings voice and messaging to your web and mobile applications.

  2. Nexmo is a simple two way SMS API with global reach and wholesale rates

  3. SMS messaging service provider offering two-way SMS communication services.

  4. Textlocal is an app that allows for individual and group texting. It is designed for businesses that have employers and employees who need to communicate with each other, making it easier to announce group meetings and special announcements.

  5. SimpleTexting offers SMS and text marketing services for companies of all sizes.

  6. Slick Text provides businesses and organizations with an easy and affordable platform for text message marketing.

  7. UltraSMSScript is a business text messaging & SMS marketing self-hosted software platform where you only pay a 1-TIME fee for the software and the WHOLESALE costs of texts. Start your own white label SaaS SMS Marketing business.

  8. Highly reliable SMS gateway service enabling businesses to send SMS messages to mobiles all around the world. Specialising in outbound bulk SMS services using SMPP SMS API for SMS broadcasts, SMS marketing and other SMS applications.

  9. 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.

  10. The easy to use mass and emergency notification platform. Send a phone call, text message or e-mail to your entire list of people in seconds.

  11. Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.

  12. Everbridge Mass Notification is a software that send notifications to individuals or groups using lists, locations, and visual intelligence.