FreshStatus - Better status pages in 1-click, FREE FOREVER
Wit.ai - Easily create text or voice based bots that humans can chat with on their preferred messaging...
statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.
Avaya one-X Agent - Other Customer Service
Dialogflow - Conversational UX Platform. (ex API.ai)