Amazon Alexa is a virtual assistant by Amazon available on the Amazon smart devices and speakers like Echo and Echo dot.
Google Assistant is a virtual assistant by Google available on the Google smart devices and speakers like Google Home, Google Nest and Android.
Dialogflow is a conversational chatbot development platform with NLP and NLU support.
Chatfuel is one of the leading chatbot development platform for Messenger.
Botsociety is on of the the industry leading chatbot and voice apps design tool.
ManyChat is the largest chat marketing platform for Facebook Messenger.
Botmock is a conversational Design tool for chatbot and voice apps.
RASA is an Open Source conversational platform with NLP and NLU support.
IBM Watson is an enterprise NLU development platform for chatbot development.
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