Weka

Weka is open-source machine learning software developed and maintained by the University of Waikato (New Zealand), providing a graphical workbench for applying data-mining algorithms — classification, regression, and clustering — to real datasets. It supports data preprocessing and visualization directly in the workbench interface, runs cross-platform as Java-based software, and comes with comprehensive documentation and educational resources maintained through an active Git repository, courses, and an FAQ section. The software is completely free under the GNU General Public License; commercial licenses are available separately for organizations with specific licensing needs. Good fit for a student or researcher learning machine learning and data mining concepts through a visual workbench, or anyone who wants to apply standard ML algorithms to a dataset without writing code from scratch.