Downloads - Freeware / Shareware

CAD / CAM / NC

A9CAD  is a Free two-dimensional CAD program. This free CAD allows drawing, viewing e editing and supports industry standard DWG and DXF drawing formats.

A9Converter is a bi-directional DWG / DXF converter. It supports standards AutoCAD R2.5, R2.6, R9, R10, R13, R14, 2000, 2002, 2004, 2005 and 2006.

Advameric NC Program Editor is a comprehensive editor for CNC programs with some specialized editing features.

Alibre Design Xpress 3D Solid Modeler is a free 3D solid modeler for creating mechanical parts, assemblies and 2D drawings. This CAD supports STEP, IGES and SAT for exchanging data with other system.

Aqsis Renderer is a cross-platform, RenderMan-compliant, 3D rendering solution. Features include programmable shading, true displacements, 3D depth-of-field, motion blur, NURBS, subdivision surfaces, constructive solid geometry (CSG), procedural plugins and more.

Archimedes 0.52.0 is a computer aided design (CAD) solution focusing on architectural design. While the current version of Archimedes may not be mature enough for all - this project is very promising. It already has many of the most common and advance drawing features you will find in a commercial CAD solution. However, it's interoperability with other products is still lacking. On the other hand drawing can be exported in scalable vector graphics (SVG) format - allowing you to share finished drawings with a wide audience without requiring them to install the product. This is a great upcoming project started in Brazil - their goals are to create a real alternative for AutoCAD, but make it more suited for architects.

Audodesk Volo® View 3 software can open a wide variety of drawing formats, namely DWG, DWF™, DXF™, Autodesk® Inventor® parts, assemblies, and drawings (IPT, IAM, IDW), raster files (including JPG, TIF, BMP, GIF, BMP, and PNG). Volo View 3 has the following limitations: Viewing of 3D DWFs; Viewing of object properties (meta data) within DWF files;  Viewing of markups produced with Autodesk Design Review or DWF Composer; Viewing of Inventor 9 or inferior, and later IPT, IAM and IDW formats.

Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.

Brava Free DWG Viewer is a free viewing for DWG, DWF and DXF formats.

BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.

CAD X11® Free is a general CAD system for drafting and light wireframe and surfacing modeling. This free CAD program supports DXF file formats.

eDrawings is a free viewing and publishing 2D CAD and 3D CAD application. This CAD viewer supports the following files formats: DXF e DWG from AutoCAD, Solidworks files (parts, assemblies and drawing), Pro/Engineer, CATIA V5, Unigraph, Solid Edge and CodCreate's OneSpace. Other Solidworks free software: 3D ContentCental, DWGgateway, SolidWorks Explorer, SolidWorks Viewer.

FreeCAD is an OpenSource CAD/CAE, based on OpenCasCade, QT and Python. FreeCAD is a 3D CAD modeler with some parametric feature. It can be used to extract 2D CAD components for design drawing  (like AutoCAD) from 3D model.

Free DWG Viewer Free Windows desktop / ActiveX software from Brava to view AutoCAD DWG/DWF/DXF and CSF.

Google SketchUp Developed for the conceptual stages of design, Google SketchUp is a powerful yet easy-to-learn 3D software tool that combines a simple, yet robust tool-set with an intelligent drawing system that streamlines and simplifies 3D design. From simple to complex, conceptual to realistic, Google SketchUp enables you to build and modify 3D models quickly and easily. If you use Google Earth, Google SketchUp allows you to place your models using real-world coordinates and share them with the world using the Google 3D Warehouse.

Pencil is a cross-platform open-source 2D animation software. Its first aim is to make traditional animations (cel, cartoons, etc). It features bitmap and vector drawing tools, layers, cameras. Animations made with Pencil can be exported as QuickTime or as Flash Movie or as a sequence of PNG images.

Pro/Engineer ProductView Express - A plug-in for your Web browser that enables the viewing and manipulation of Pro/ENGINEER parts, assemblies and drawings.

ProgeCAD LT is a Freeware light version of ProgeCAD 2007 Professional.  With ProgeCAD LT you can draw, edit and view  files in DWG format. This CAD aplication is AUTOCAD compatible.

TopSolid Viewer is a Free plug-in to view any designs, drawings and kinematics created with products based on TopSolid.

Sweet Home 3D is an interior design Java application for quickly choosing and placing furniture on a house 2D plan drawn by the end-user, with a final 3D preview.