Create 2D technical drawings and floor plans + 3D direct modeling operations with BricsCAD. BricsCAD is the familiar design platform for all your needs; 2D drafting, 3D modeling, mechanical design and BIM.
DraftSight is a professional-grade 2D design and drafting solution that lets you create, edit, view and markup any kind of 2D drawing.
Program for structural analisys using the Stiffness Matrix Method. It has its own graphical interface and full GUI.
Fachwerk is aimed at structural engineers who analyse and design reinforced concrete structures.
Fachwerk3D is the spatial version of the program Fachwerk. It intends to simplify the application of discontinuous stress fields and strut-and-tie models.
FreeCAD is a parametric 3D modeler. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.
FreeMat is a free open source numerical computing environment and programming language, similar to MATLAB and GNU Octave.
Ftool provides a simple analysis program that merges, in the same interface, resources for effective creation and manipulation of the model, linked to a fast and effective code for visualization of the results.
Genius is a free open source numerical computing environment and programming language, similar in some aspects to MATLAB, GNU Octave, Mathematica and Maple.
Giswater connects water simulation programs to a powerful GIS interface, and lays the foundation for full management of water supply systems, sewerage systems, drainage networks and rivers.
Gmsh is a 3D finite element grid generator with a build-in CAD engine and post-processor. Its design goal is to provide a fast, light and user-friendly meshing tool with parametric input and advanced visualization capabilities.
GSFLOW is a coupled Groundwater and Surface-water FLOW model based on the integration of the USGS Precipitation-Runoff Modeling System (PRMS-V) and the USGS Modular Groundwater Flow Model (MODFLOW-2005 and MODFLOW-NWT).
LibreCAD is a free Open Source personal CAD application for Windows, Macintosh and Linux.
Maxima is a system for the manipulation of symbolic and numerical expressions, including differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of linear equations, polynomials, and sets, lists, vectors, matrices, and tensors.
QCAD is an application for computer aided drafting in two dimensions (2d).
Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications.
SEISAN analysis software suite is a complete set of programs and an uncomplicated database for analyzing earthquakes from analog and digital data.
Ground-breaking software for simulation and scientific visualisation. Through innovative use of interactive graphics, Sysquake reveals insights into complex mathematical systems.
ZWCAD Viewer is a lightweight and free software to open DWG, DXF, DWF and DWT file formats from version R12 to 2013.
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