A Java program that can be used to easily digitize scanned data plots. It allows you to extract correctly-scaled (x,y) values from graphs for which you can’t obtain the original data.

SF

NumPy derives from the old Numeric code base and can be used as a replacement for Numeric. Realize that NumPy (module name numpy) is the new name.

SF

Gerris can solve the time-dependent Euler, Stokes, and Navier-Stokes equations of fluid motion. The domain geometry can be arbitrarily complex.

The OpenFOAM (Open Field Operation and Manipulation) CFD toolbox can simulate anything from complex fluid flows involving chemical reactions, turbulence, and heat transfer, to solid dynamics, electromagnetics, and the pricing of financial options. It uses finite volume numerics to solve systems of partial differential equations ascribed on any 3D unstructured mesh of polyhedral cells.

GtkSourceView is a text widget that extends the standard Gtk+ 2.x GtkTextView widget. It improves it by implementing syntax highlighting and other features typical of a source editor.

A really nice introduction from the developers of GiNaC

Computer Algebra Systems

Computer Algebra Systems (see also tag:cas)

The Magma Computational Algebra system for algebra, number theory and geometry. .

Boost was begun by members of the C++ standards committee Library Working Group to provide free peer-reviewed portable libraries to the C++ community.

The Matrix Template Library (MTL) is a high-performance generic component As with the Standard Template Library (STL), MTL uses a five-fold approach.

ASCEND IV is both a large-scale object-oriented mathematical modeling environment and a strongly typed mathematical modeling language. Although ASCEND has primarily been developed by Chemical Engineers, great care has been exercised to assure that it is domain independent. ASCEND can support modeling activities in fields from Architecture to (computational) Zoology. ASCEND includes a selection of standard models focussed on the chemical engineering domain. It also includes what is thought