Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Voiceflow - Build voice apps in your browser without coding
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda
ChatBot - Easy to use chatbot platform for business
API to bot - Convert your API to Alexa skill or Google Home app in 5 mins