VISEO Bot Maker - Create chatbots and vocal apps in just a few clicks
Dialogflow - Conversational UX Platform. (ex API.ai)
Botpress - Open-source platform for developers to build high-quality digital assistants
Meya.ai - Build, train and host sophisticated bots.
Amazon Lex - Harness the power behind Amazon Alexa for your own conversational apps.
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.