Available Facebook Messenger Chat Bots List
April 21, 2016 - At the F8 Developer Conference, Mark Zuckerberg (Facebook's CEO) introduce the Chat Bot Platform which enables developers to create natural language AI bots. Chat bot essentially is an Artificial Intelligence (AI) program that interacts with users without the need of human interventions. At the announce, a few companies had early access to the platform and were showcased at the announcement.
Here are a list of early available chat bots for Facebook Messenger: