GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
LibreOffice - Math - Math, LibreOffice, math editor, ODF, OpenFormula, open standards
LabPlot - LabPlot is a KDE-application for interactive graphing and analysis of scientific data.
Math Magic - MathMagic Equation Editor for Desktop Publishing software & Word Processors, Adobe InDesign, QuarkXPress, MS Word, iWork, for Technical writing with very easy interface and fast input.
Matplotlib - matplotlib is a python 2D plotting library which produces publication quality figures in a variety...
KLatexFormula - KLatexFormula is an easy-to-use graphical application for generating images (that you can drag and...