Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
Botlytics - Analytics for your bot
ChatBot - Easy to use chatbot platform for business
Dialogflow - Conversational UX Platform. (ex API.ai)
Aselector - Aselector is a knowledge management tool for customer self serve as well as agent help.
ChatBottle - Chatbots Search Engine