Convert DWG/DXF to different versions
A9Convert is a command line program to convert DWG/DXF to different versions of DWG/DXF.
Online Viewer for 2D and 3D Designs
Autodesk Viewer is a free online viewer for 2D and 3D designs including AutoCAD DWG, DXF, Revit RVT and Inventor IPT, as well as STEP, SolidWorks, CATIA and others.
DXF, DWG, DWF, DXB, PDF Convert, View and Print
CAD File Converter's main purpose is to find its way among the various formats and versions of documents generated by Autodesk's AutoCad and by numerous other programs using DXF, DWG, DWF, DXB and PDF formats.
CalcPad is a professional software for mathematical and engineering calculations. It represents a flexible and modern programmable calculator.
Civil Engineering Calculations
This program was designed to provide Civil Engineers and Land Surveyors with a quick way to calculate or check points on portions of a roadway profile, area calculations, drainage/flow calculations, traffic counts, etc.
Convert between many different units and measurements, including area, density, energy, flow rate, force, velocity, viscosity, volume & more.
Converts printed data to numerical data
Software to digitize data from graphs for Engineering design calculations and analysis.
Architectural Surveys, Mapping and Photogrammetry.
DigiCad 3D is an excellent tool for dealing with images, drawings, photographs of building, regular or irregular surfaces and maps.
A light CAD viewer for fast, precisely and conveniently opening CAD files.
DWG FastView is a cross-platform CAD software that meets designers demands in all kinds of situation, and fully compatible with AutoCAD.
A lite and fast dwg viewer, browse, view, measure, print DWG, DXF, DWF files. Supports AutoCAD drawing format from R2. 5 to the latest version 2013.
EngiLab Units is an easy-to-use yet powerful unit conversion tool for Windows.
Civil / Structural Engineering
Civil / Structural engineering app that bundles information for the construction industry.
ETOOLBOX Free CAD Viewer is a mobile CAD application (*. dwg) viewer of the CMS IntelliCAD® CAD Software or any CAD software able to create *. dwg, *. dxf and *. dwf files.
Open-source numerical software package
Euler is a free and open-source numerical software package.
Open Source Numerical Computing Environment
FreeMat is a free open source numerical computing environment and programming language, similar to MATLAB and GNU Octave.
Feasible Reliability Engineering Tool
FReET is a multipurpose probabilistic software for statistical, sensitivity and reliability analysis of engineering problems.
Mathematics Tool and the GEL Language
Genius is a free open source numerical computing environment and programming language, similar in some aspects to MATLAB, GNU Octave, Mathematica and Maple.
Plot Structural Geology Rose Diagram & Polar Area Diagram
GeoRose is a program plotting rose diagram used in structural geology area.
Three-Dimensional Finite Element Mesh Generator
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.
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i don't see the guide to direct us how to enter data...
Features such as inverse, intersections (distance-distance, Bearing-distance, bearing-bearing), stake-out, inverse area, offsets, curve inverse would be great....