Message.io - Make your chat bots cross-platform
Whelp - AI-based Omni channel customer support platform with chat bot system (On premise and cloud based)
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
B2Chat - Instant messaging software to unify all of your chats in one single inbox.
impossible.bot - Get a chatbot without writing code or any special content
SleekFlow.io - Sell, convert & support better on chat