Bios Analyzer
Free time series data analysis software with recurrence quantification analysis.

Exocortex.DSP
Open source C# Complex Number and FFT library for Microsoft .NET.

GNU Octave
High-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems.

GNU Scientific Library
A numerical library for C and C++ programmers. It is free software under the GNU General Public License.

GrafiCalc
Software that enables users to work with geometry in the same way as conventional spreadsheets work with numbers. Developed by GEOMATE Company.

Graph Digitizer
Excel-based digitizing software. With free demo and order information.

Graph Paper Printer
Software application designed to print numerous kinds of graph papers, music manuscripts and pattern papers, with user-defined sizes and colors.

HyperCube
Macintosh and Windows application program specifically directed to the analysis and display of multi and hyperspectral imagery.

IBM ILOG CPLEX Optimizer
High-performance mathematical programming solver for linear programming, mixed integer programming, and quadratic programming.

Incompetech
Downloadable and printable files for free graph paper and grid paper.

LiveMath
Computer algebra and graphing system for the mathematician, or mathematics student or scientist, who is not necessarily a programmer.

Mathematical Software Resources
List of resources for research in mathematical software maintained for the convenience of Transactions on Mathematical Software (TOMS) readers.

Mathtools.net
Directory of resources for the technical computing community.

Mathway
Software tool for students to use in solving math problems with algebra, trigonometry, calculus, and statistics.

MGCSoft Software
Equation, graphical, timer and password software for Windows 98, ME, NT4 SP6, 2000 and XP.

OriginLab
Produces professional graphing and data analysis software for scientists and engineers.