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Object-oriented 2D and 3D CAD tool for all types of engineering and architecture design. Offers functions for presentation of initial draft ideas, 3D design, construction documentation and detailed planning and costings. Download requires registration.

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Software for analysing and compressing STL files. In addition to various display and measuring options, it provides functions for element queries and the creation of section views.

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IntelliCAD technology-based 2D/3D CAD tool with full AutoCAD-compatibility for creating drafts and drawings. According to the manufacturer, it’s ideal for use in mechanical engineering, architecture and for GIS users. User interface is identical to AutoCAD and has the same commands and structures. Fast and secure download from The H

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A parasolid-based parametric 3D-CAD/CAM system, includes (among others) automatic derivative drawing in 2D, a bill of materials generator, stress analysis, sheet metal, welding design and its own API.

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Tool for measuring the spacial coordinates and distances on digital photos. Creates texturised models and outputs them as a PDF or Collada/DAE file. Fast and secure download from The H

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Cut optimisation software for best use of panels and bars, with direct data transfer from Excel and freely configurable label printing. Especially suitable for cabinet makers and plastic- and metal-processing companies.

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Converts DWG, DXF and DWF to SVG, in batches. Doesn’t require AutoCAD. Versions for converting to image, PDF and WMF files also available.

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Converts PDF files into DXF format so they can be opened in AutoCAD.

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OCR software for converting raster data into vector data to get the best possible results from raster images, maps, aerial photos, satellite images and Digital Elevation Models (DEMs). The integrated raster editing and vectoring tools are designed to make it easier for you to edit images and to manage and optimise scanned drawings and plans.

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Use this to convert DWG, DXF and DWF files into PDF, either singly or in batch mode, without the need for AutoCAD. Extended Pro version available for $186, ActiveX Control version for $498.

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2D/3D CAD and design software for drawing and modelling wire grids, skin or solid bodies. Includes photo-realistic rendering functions and extensive integrated interfaces such as SAT, STEP, IGES, STL, Parasolid, CI, EPS, 3DS or DXF/DWG.

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Converts between the AutoCAD standard formats DWG and DXF without needing AutoCAD installed.

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Design software for creating printed circuit boards. Supports PCB layout, board and FPGA level design, signal integrity, 3D and analysis. Includes the "Constraint Browser" for managing required design rules in tables and including them in the development.

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3D CAD program which combines basic forms with complex objects following the principles of constructive solid geometry (CSG). The user inputs shapes and combinations in a script file. Fast and secure download from The H

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Upgradeable system for displaying, editing and repairing the polygon surface meshes of 3D models. Fast and secure download from The H

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Wind tunnel simulation tool for interactively investigating the aerodynamic properties of product designs. Available as an add-on for programs in the Alias Automotive, Design and Surface product series, as well as a standalone version for STL files. Download requires registration.

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Toolkit for mechanical CAD, design verification, product data management, design communications and CAD productivity. Additional software for simulation, documentation, data organisation and version control is also available.

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CAD program that includes icon libraries for designing circuits. Finished designs can be saved as PNG files or copied and pasted into Word documents. Fast and secure download from The H

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Free viewer for displaying and measuring DWG, DWF and DXF files. Offers Xref support for displaying levels and block attributes.

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Allows you to build virtual Lego bricks on top of one another using your PC. You can construct buildings, vehicles and other models and, to help make your virtual models real, just press a button and the program produces a list of all the bricks you need. For inspiration, it comes supplied with various construction manuals.

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