DPlot!

LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.org Calc, professional data miners and number crunchers will appreciate its comprehensive range of advanced functions.

Microsoft Excel, part of the Microsoft Office Suite, is Microsoft's spreadsheet application. With the Microsoft Office Fluent user interface, rich data visualization, pivot table views, and professional-looking charts are easier to create and use.

GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching. It has received several educational software awards in Europe and the USA.

The Gnumeric spreadsheet is part of the GNOME desktop environment: a project to create a free, user friendly desktop environment.

Calc, part of the Apache OpenOffice suite, is a spreadsheet application. It is similar to Microsoft Office Excel , with a roughly equivalent range of features. Calc is capable of opening and saving most spreadsheets in Microsoft Excel file format. It provides a number of features not present in Excel, including a system that automatically defines series for graphing based on the layout of the users data. Calc is also capable of writing spreadsheets directly as PDF files. »

Gnuplot is a portable command-line driven interactive data and function plotting utility. It was originally intended as to allow scientists and students to visualize mathematical functions and data. It does this job pretty well, but has grown to support many non-interactive uses, including web scripting and integration as a plotting engine for third-party applications like Octave. Gnuplot supports many types of plots in either 2D and 3D. It can draw using lines, points, boxes, contours, vector fields, surfaces, and various associated text. It also supports various specialized plot types. »

matplotlib is a python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. matplotlib can be used in python scripts, the python and ipython shell (ala MATLAB®* or Mathematica®†), web application servers, and six graphical user interface toolkits.

In Numbers ’09, spreadsheets are built on a flexible, free-form canvas. So you can move tables, charts, graphics, and text anywhere you want on the page. As tables resize, objects automatically adjust to fit around them. Create as many tables as you want. Change fonts, sizes, colors, styles, and borders. With graphics tools, alignment guides, and rulers, spreadsheet-making becomes a surprisingly creative endeavor. And suddenly, spreadsheets make more sense.

Kingsoft Spreadsheets allows users to perform complex data calculation and analysis. The program is compatible with Microsoft Excel (97/2000/2003/2007/2010) and possesses an interface that is similar to the latter. It has a large number of built-in formulas and numerous functions to aid in data analysis. It also has an encryption function, a built-in PDF converter and more. 2000 character descriptionKingsoft Spreadsheets can meet maximum data-analysis needs and provides the quantitative support for your decision making when weighing the alternatives. It provides charts, illustrations, diagrams and other analysis tools, making it intuitive and easier to display your conclusions. Not only is Kingsoft Spreadsheets compatible with Microsoft Excel (97/2000/2003/2007/2010), but also contains unique features to make statistical analyses much easier. »

QtiPlot is a professional scientific data analysis and visualisation solution. It is meant to be a cheap alternative to proprietary and costly software such as Origin, SigmaPlot, Regressi or Igor Pro.

DataGraph is a simple and powerful graphing application for Mac OS X. It is a great companion for Excel, Numbers or any of the big statistical packages.

SciDAVis is a free application for Scientific Data Analysis and Visualization. It's an application aimed at data analysis andpublication-quality plotting. It combines a shallow learning curve andan intuitive, easy-to-use graphical user interface with powerfulfeatures such as scriptability and extensibility. Quite extensive manual can be found here: http://scidavis.sourceforge.net/help/manual/index.html