ChatBot - Easy to use chatbot platform for business
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Number To Whatsapp - A utility tool which lets your start a Whatsapp conversation without saving the contact of the said person first.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
WATI - No-code chatbot builder for WhatsApp Business
Plivo - Plivo simplifies your customer engagement.