SigmaPlot!

MATLAB is a numerical computing environment and programming language. Maintained by The MathWorks, MATLAB allows easy matrix manipulation, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs in other languages. Although it is numeric only, an optional toolbox uses the MuPAD symbolic engine, allowing access to computer algebra capabilities. An additional package, Simulink, adds graphical multidomain simulation and Model-Based Design for dynamic and embedded systems. »

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.

Graphical frontend for GNU Octave. Edit formulas in native mathematical notation. Available / tested for Linux x586 / x86_64, WinXP, Vista, and MacOS.

Xcos is a graphical editor to design hybrid dynamical systems models. Models can be designed, loaded, saved, compiled and simulated.

GraphPad Prism is a powerful combination of basic biostatistics, curve fitting and scientific graphing in one comprehensive program. More than 100,000 scientists in over 100 countries rely on Prism to analyze, graph and present their scientific data.

Calculation Laboratory is an online environment for numerical computations. By using this site you get fast access to the easy-to-use tool for computing from anywhere. Calculation Lab is perfect for engineering students.

Technical graphing and data analysis for Macintosh and Windows. IGOR Pro creates publication quality scientific graphics used by scientists and engineers around the world. IGOR Pro 6 is an extraordinarily powerful and extensible scientific graphing, data analysis, image processing and programming software tool for scientists and engineers.

Kst is a fast, real-time large-dataset viewing and plotting tool available and has built-in data analysis functionality.Kst is moreover expandable with plugins and extensions.

Derive 6.1: Powerful system for doing symbolic and numeric mathematics. This application is no longer available or supported.

Doronix Math Toolbox is a numerical computing environment with programming language which can be used as alternative to MATLAB. It allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user functions, import and export CSV-files and more