Octopush - Octopush is a company providing technology-based communication solutions, including SMS, Web solutions, and Email APIs.

Releans - Communication platform for Messaging and Chatbots

E-goi - Email Marketing companies, SMS Marketing, software email marketing.

Twilio - Brings voice and messaging to your web and mobile applications.

SendSMSGate - ✅Send SMS Bulk and 📨📨📨 Service SMS and Viber ads all over the world. 💰Cheap rices, round-the-clock support and direct contracts with mobile operators.

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