Gnumeric - Gnumeric
Scikit-learn - scikit-learn (formerly scikits.learn) is an open source machine learning library for the Python programming language.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Pandas - Pandas is an open source library providing high-performance, easy-to-use data structures and data analysis tools for the Python.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
NumPy - NumPy is the fundamental package for scientific computing with Python