» The Cactus Code - A modular manageable high-performance 3D tool for Numerical Relativity.
» CarpetCode - A mesh refinement driver for the Cactus code; the primary application is the simulation of black hole spacetimes.
» Cartan: A Mathematica Package for Tensor Analysis - Product information from Ad Infinitum AS about a package for use with the Mathematica software; allows interactive tensor calculations in spacetimes of arbitrary dimension.
» Form Symbolic Manipulation System - A free software package for manipulating tensors (abstract index notation) and other multi-component objects; highly suitable for calculations in general relativity and related theories such as supergravity. Documentation, course material, and possibilities for download.
» GRAVLENS - Software for modelling gravitational lens systems; created and maintained by Chuck Keeton at Rutgers University.
» GRTensorII - A computer algebra package for performing differential geometry calculations. Demonstrations of the package's applications to general relativity.
» GRTensorM - A version of GRTensor II for use with the Mathematica software.
» Kranc - A suite of Mathematica packages for numerical relativists, which helps with tasks such as performing 3+1 decompositions, analytical manipulations of tensorial systems of equations (such as change of variables), computation of characteristics or linearizations, and automatic code generation.
» openGR - An open framework for large numerical simulations in general relativity.
» Ricci - A Mathematica package for doing tensor calculations in differential geometry and general relativity.
» Riemann Package for Maple - Package written in Maple for calculating tensor components in General Relativity and performing some abstract tensor manipulation; suitable for calculations in general relativity and for quantum field theory in curved spacetime. Features brief description, download for Maple V and for Maple 6 or higher, and examples.
» Whisky - A code to evolve the equations of hydrodynamics in curved spacetime (relativistic numerical hydrodynamics).
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