Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
UXPin + Slack - Keep tabs on design projects in Slack
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.
StatusOk (Open source) - Get notified through Slack/email when your website is down
ChatBot - Easy to use chatbot platform for business
Attentive - A marketing channel, built for retail & e‑commerce