- R-Programming - Besides data mining it provides statistical and graphical techniques, including linear and nonlinear modeling, classical statistical tests, time-series analysis, classification, clustering, and others.
Orange - You will fall in love with this tool’s visual programming and Python scripting. It also has components for machine learning, add-ons for bioinformatics and text mining. It’s packed with features for data analytics.
KNIME - Data preprocessing has three main components: extraction, transformation and loading. KNIME does all three. It gives you a graphical user interface to allow for the assembly of nodes for data processing. It is an open source data analytics, reporting and integration platform.
NLTK - NLTK provides a pool of language processing tools including data mining, machine learning, data scraping, sentiment analysis and other various language processing tasks