REDUCE is a system for doing algebra by computer that also supports numerical approximation and interfaces to gnuplot to provide graphics. It has a long and distinguished place in the history of computer algebra systems. For comparison, other systems that address some of the same issues but sometimes with rather different emphases are Axiom, Derive, Macsyma (Maxima), Maple, Mathematica, and MuPAD.
TankCalc is a sophisticated storage tank analyzer. Using numerical Calculus methods, it models storage tanks of many different kinds: horizontal, vertical, even mounted at an angle between 0 and 90 degrees, with flat, spherical, elliptical, or conical end caps with user-defined dimensions. It produces tables of data correlating content height and partial volume or the reverse, and computes the tank's weight as well as the weight of its contents. It includes a 3D (perspective and anaglyphic) graphic modeling tool that greatly helps users in understanding the tank being modeled as well as configuring sensor placement.
HeeksCNC is a CAM (Computer Aided Manufacturing) add-on module for HeeksCAD. The user can add machining operations. These can then be output to NC code. The NC code is then shown as red and green lines on the screen. The NC code is generated using Python script, so it can be configured for different machines. HeeksCNC uses pycam for the "Zig Zag" operation, libarea for the "Pocket" operation, and libactp for the "Adaptive Roughing" operation.
Z88 is a fast, powerful, and compact finite elements analysis program. Z88 features 20 finite element types; it covers plane stress, plate bending, axial symmetric structures, and spacial structures up to 20-node Serendipity hexahedrons. It comes with a user-friendly interface (the Z88 Commander), and has a powerful mesh generator. It features a DXF coverter and two plot programs. The FEA solver is included, featuring an in-situ Cholesky solver along with the Jennings storage method. COSMOS and NASTRAN files from Pro/ENGINEER can be imported. Z88 is a project of the University of Bayreuth, Germany.
SynScope is an offline visualization and alignment tool for time-varying signals acquired from multiple sources that may differ in offset and/or sample rate. SynScope allows you to define reference points that correspond to identical events between source pairs. It then estimates the offset and resample rate to link these sources. It maps sample time from one source to the other via a link equation. Signal alignment can be inspected with synchronous visualization or resampling. With synchronous visualization, linked signals scroll together according to the link relation. With resampling, linked signals are resampled to the highest sample rate and offset-compensated.
GPlates offers a novel combination of interactive plate-tectonic reconstructions, geographic information system (GIS) functionality, and raster data visualization. GPlates enables both the visualization and the manipulation of plate-tectonic reconstructions and associated geological, geophysical, and paleo-geographic data through geological time.