The Alexa APIs for Java consists of JAVA POJO classes that represent the request and response JSON of Alexa services. These models act as core dependency for the Alexa Skills Kit Java SDK (https://github.com/alexa/alexa-skills-kit-sdk-for-java ).

ASK Toolkit is an extension for Visual Studio Code (VSC) that that makes it easier for developers to develop and deploy Alexa Skills.

The Alexa Skills Kit SDK for Java helps you get a skill up and running quickly, letting you focus on skill logic instead of boilerplate code.

APL Core Library enables device makers to create their own "APL viewhost", bringing Alexa experiences with visual renderings to new devices or platforms using any programming language that can invoke C/C++ code.