Jotform Mobile Forms - Mobile Forms Reimagined. Robust forms that work anywhere.
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
Simple Form - Simple Form allows you to setup forms with any kind of data
Dialogflow - Conversational UX Platform. (ex API.ai)
Sheet Monkey - Submit your forms to Google Sheets
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.