Meya.ai - Build, train and host sophisticated bots.
Dialogflow - Conversational UX Platform. (ex API.ai)
Chatbots - Chatbots.org (BETA)
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Chatbot Templates - 50+ bot templates you can use in one click
Botpress - Open-source platform for developers to build high-quality digital assistants