Jasper - Jasper is an open source platform for developing always-on, voice-controlled applications.
Gomix - The easiest way to build the app or bot of your dreams
Pullstring - Powering computer conversation across all platforms.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
ChatterOn for Messenger - Build Facebook chat-bots in under 5 minutes
Recast.AI - Recast.AI is the leading platform to build, connect and monitor bots.