The source code in inst/java/AMIDST-kernel-reduced-0.6.0.jar is the AMIDST Toolbox version 0.6.0 
It can be downloaded at http://www.amidsttoolbox.com and available through the Apache license 2.0.
The AMIDST Toolbox incorporates the following libraries:
com.google.guava:18.0 with Apache license 2.0
junit:4.11 with Common Public license
org.apache.commons-math:2.1 with Apache 2.0 license
org.apache.commons-math3:3.5 with Apache 2.0 license
org.apache.commons-lang3:3.3.2 with Apache 2.0 license
org.slf4j:1.7.7 with MIT license