Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
Numi App - Numi is a beautiful text calculator for Mac.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
Soulver 3 for Mac - A smart notepad with a built in calculator
Matplotlib - matplotlib is a python 2D plotting library which produces publication quality figures in a variety...