Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Dialogflow - Conversational UX Platform. (ex API.ai)
Carrd - Simple, responsive one-page site creator.
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.
mmm.page - Dead simple, drag & drop personal websites