Chatterbot Platform or Chatbot Software are computer program which are designed to simulate an intelligent conversation with one or more human users via auditory or textual methods, for engaging in conversation. Chatterbot are text based conversation agent which can interact with human users through some medium, such as an instant message service. The primary aim of such simulation has been to fool the user into thinking that the program's output has been produced by a human. Programs doing this are referred to as Artificial Conversational Entities, talk bots, chatterboxes, chatter robot, chatterbot, chatbot, or chat bot. Some of the chatterbots use natural language processing systems, and some others scan for keywords within the input and respond with a reply with the most matching keywords, or similar wording pattern, from a textual database. Chatterbots are often integrated into dialog systems for various practical applications such as offline help, personalised service, or information acquisition.

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Actionable Science is a technology startup using Artificial Intelligence (AI) to deliver conversational helpdesk services. The company's Virtual People/digital agents use advanced NLP and machine intelligence to enable customers to have natural dialogues over messaging. The digital agents come ready to be implemented and are pre-trained with basic, entry-level skills for their functional roles. They can do everything you expect from an optimized service desk, including tracking tickets and seamlessly partnering with your human teams.
It also has a number of templates, covering bots built for shopify, woocommerce, livechat, restaurants and other templates which helped me understand how the different blocks come together to build a complex chabot. Voice conversation integration with alexa echo/google home is also coming up, along with web widgets if the existing twilio, telegram, facebook integrations are not enough already.
This form of obtaining information from the collective intelligence of a large number of people allows Cleverbot to respond in new conversations by taking into account the context of the conversation typed by a user and searching its database for an appropriate response. It scans its history for every user-submitted response to the given question and replies accordingly, which creates a more human-like conversation with users.
This chatbot is one the best AI chatbots and it’s my favorite too. Evidently it is the current winner of Loebner Prize. The Loebner Prize is an annual competition in artificial intelligence that awards prizes to the chatterbot considered by the judges to be the most human-like. The format of the competition is that of a standard Turing test. You can talk with Mitsuku for hours without getting bored. It replies to your question in the most humane way and understands your mood with the language you’re using. 

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