Dialogflow - Conversational UX Platform. (ex API.ai)
Epichat for Messenger - Raise your social media marketing to the next level
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Upcado - Super easy to use Messenger Marketing tool for your business
Botpress - Open-source platform for developers to build high-quality digital assistants
Conte.ai - Conte.ai is a modern web-service for businesses of all sizes from any industry