Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
NLSQL Bot - A smart sales bot that's integrated with your database
Dialogflow - Conversational UX Platform. (ex API.ai)
Sheetsu - Turn Google Spreadsheet into API
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.
Unbounded - Serverless NoSQL database you query with JavaScript