Dexter - A platform that makes connecting third-party APIs easy
Dialogflow - Conversational UX Platform. (ex API.ai)
Abot for Slack - Trusted by over 1000 Slack teams ✅. Abot is a simple and highly configurable app for anonymous feedback messages and more. If you want to create a poll on Slack or use it as an anonymous suggestion box you just need to type a simple command.
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Meya.ai - Build, train and host sophisticated bots.