Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Plivo - Plivo simplifies your customer engagement.
The Power of Chatbots - The art of conversation with chatbots