Dialogflow - Conversational UX Platform. (ex API.ai)
UserGuiding - User onboarding made easy, for less. Create product walkthroughs in a couple of clicks, without breaking the bank.
Botpress - Open-source platform for developers to build high-quality digital assistants
Usetiful - Fight user churn with great user onboarding. Interactive product tours and smart tips significantly improve your user retention.
Messenger Platform - Discovery, chat extensions, and richer experiences
Userlane - Digital adoption platform with interactive guidance for software applications allowing anyone to understand and master any software from the get-go.