Motion.ai - Motion is AI based bot builder enabling users to visually build, train and deploy bots to do just about anything.
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
Slack Message Buttons - Making messages more interactive with buttons
Dialogflow - Conversational UX Platform. (ex API.ai)
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.
Clerk Chat - SMS for Slack