Echosim.io is intended to allow developers who are working with the Alexa Skills Kit (ASK) to test skills in development. … It is not a substitute for Alexa-enabled devices.
That is to say, the interface will neither stream music nor support far-field voice recognition. However, it does allow aspiring developers who have yet to acquire an Echo or Dot to test their code. See this article at Amazon Developer for more information. Hosting Echosim.io is iQuarius Media, a social-media marketing firm in Orlando, Florida.
Cynthia Murrell, April 5, 2017