WhatsApp Business launched a kind of beta test run of bots on the platform which has now more than 3 million users. Chatbots which connect artificial intelligence with customer experience is an ideal choice for WhatsApp. WhatsApp being the messaging app for more than 1.5 billion people is the right choice to build chatbots. With its launch of WhatsApp Business App, many people were able to have business chats quicker and easier than ever before. It is only because of their focus on their service for simplicity, utility and quality has made them be where they are now.
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WhatsApp – NodeJS
https://github.com/ArugaZ/whatsapp-bot
WhatsApp/Twilio/Flask – Python
https://www.twilio.com/blog/build-a-whatsapp-chatbot-with-python-flask-and-twilio