Amazon Lex is a service for building conversational interfaces into any application using voice and text. Amazon Lex provides the advanced deep learning functionalities of automatic speech recognition (ASR) for converting speech to text, and natural language understanding (NLU) to recognize the intent of the text, to enable you to build applications with highly engaging user experiences and lifelike conversational interactions. With Amazon Lex, the same deep learning technologies that power Amazon Alexa are now available to any developer, enabling you to quickly and easily build sophisticated, natural language, conversational bots (“chatbots”). Speech recognition and natural language understanding are some of the most challenging problems to solve in computer science, requiring sophisticated deep learning algorithms to be trained on massive amounts of data and infrastructure. Amazon Lex democratizes these deep learning technologies by putting the power of Amazon Alexa within reach of all developers. Harnessing these technologies, Amazon Lex enables you to define entirely new categories of products made possible through conversational interfaces. As a fully managed service, Amazon Lex scales automatically, so you don’t need to worry about managing infrastructure. With Amazon Lex, you pay only for what you use. There are no upfront commitments or minimum fees.

DB: The last app I looked at was Talkspace, which provides online therapy with a licensed health professional at a significantly reduced rate. Similar to Joyable, it uses a variety of activity-based tools to make improvements in a variety of areas such as happiness, compassion, balance, self-awareness, and productivity. Users can communicate with therapists by leaving text, audio, and video messages at any time.


Chatbots, which are often called virtual agents or virtual assistants, are used in place of a human to conduct specific tasks or provide information based on written or spoken requests. This functionality includes both external, customer-facing requests and internal, employee-facing requests. Chatbots allow users to interact with an application in a conversational manner, whether textually or audibly, to perform certain functions.
Drift is the world's leading conversational marketing and sales platform that helps businesses connect now with the customers who are ready to buy now. With its quickly evolving set of tools and playbooks, Drift is leading businesses through the customer-driven revolution by using conversations to unlock hypergrowth. Customers use Drift to provide a modern buying experience for potential customers, generate more qualified leads, and dramatically accelerate the sales cycle. After just two years in market, the company has become one of the fastest growing SaaS companies of all-time and was named to the Forbes Cloud 100, LinkedIn Top 50 Startups, Entrepreneur's Top Company Cultures, Boston Business Journal's Best Places to Work, and SaaS Company of the Year by the NEVCA. Get started for free today and join 150,000+ businesses using Drift at drift.com.
Pros: Having a woocommerce site than activechat is a must have bot for your facebook page. Not only for facebook they have bots for other platforms like telegram, and whatsapp bots are about to launch in a while. They have launched a website widget too. NLP is an addition to this bot its just more interactive than any other bot available. I am waiting for whatsapp integration
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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