User: I need to find some open source tools for data analysis.
Assistant: RapidMiner is an open-source data science platform used for data preparation, machine learning, deep learning, text mining and predictive analysis. 2  Orange is an open-source data visualization and analysis tool that allows users to create visualizations, to analyze and explore data, and to uncover data insights. 3 Weka is an open source software that provides extensive algorithms for data mining tasks, such as data pre-processing, classification, clustering and association rules.  4 Jupyter Notebook is an open-source web-based platform used for data analysis and visualization. 5 NumPy is an open-source library used for scientific computing and data analysis. 6 Pandas is an open-source Python library for efficient data manipulation, exploration, and analysis.