What are some alternatives?
Google Cloud Natural Language API - Natural language API using Google machine learning
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
spaCy - spaCy is a library for advanced natural language processing in Python and Cython.
Olark - Real-time chat and monitoring of your website visitors through Google Talk and Jabber.
Phrasee - AI that writes better than you.
Crisp Chat - Multi-channel customer support software