GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab.
Scicos is a graphical dynamical system modeler and simulator. With Scicos you can create block diagrams to model and simulate the dynamics of hybrid dynamical systems and compile your models into executable code. Scicos is used for signal processing, systems control, queuing systems, and to study physical and biological systems. New extensions allow generation of component based modeling of electrical and hydraulic circuits using the Modelica language.
Last week I couldn't use my regular dev. machine (broken graphics card), so all my WordPress-related plans were on hold. To pass the time, I built a simple
G. Amdahl. Proceedings of the April 18-20, 1967, Spring Joint Computer Conference, page 483–485. New York, NY, USA, Association for Computing Machinery, (1967)
D. Peaceman. chapter 1, page 2-5. Elsevier Scientific Pub. Co. : Distributors for the U.S. and Canada, Elsevier North-Holland, Amsterdam; New York, (1977)