Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
Botsociety - Botsociety is a tool to design, preview and export your chatbot.
VECA - Your eCommerce assistant
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.
ChatterOn for Messenger - Build Facebook chat-bots in under 5 minutes
Init.ai - Init.ai is the simplest way to build, train, and deploy intelligent conversational apps