KNIME - KNIME, the open platform for your data.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
RapidMiner - RapidMiner is a software platform for data science teams that unites data prep, machine learning, and predictive model deployment.
Rust - A safe, concurrent, practical language
WEKA - WEKA is a set of powerful data mining tools that run on Java.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible