Free cad drawings software for windows

ZwCAD 2006i, best alternative to AutoCAD with native DWG version from 2.5 to 2006. ZwCAD 2006i, more stable with over 200 enhancements, improve your drawing efficiency. ZwCAD can read, save and edit the files produced by AutoCAD (2.5-R14-2006) and the other way round. Its the intelligent choice for architects, engineers, designers, and virtually any professional who creates professional 2D and 3D CAD drawings. ZwCAD can be customized with lisp, C++ (ADS), and VBA (Visual Basic for Application). With over hundreds of bug-fixes, enhancements and unique features added, ZwCAD 2006i is a major step forward in providing CAD users access to advanced technology at affordable price.
New Functions:
Drawing Recovery and Audit
Support export to bmp, dwf, wmf, emf, eps, pdf, svg
VBA and VBA manager (VBAMAN) support
Wipeout objects and 3D Acis support
Microsoft ActiveX support for in-place editing
Polar tracking and object snap tracking support
Import/Export WMF (Windows metafile format) files support
Unlimited undo/redo
Proxy objects display and print
Quick Select support
Multiple-Language Support in Mtext
Dimension Trim/Extend support
Mline and Mline style support
Polygonal viewport and viewport lock support

CADopia Standard is a full-featured 2D and 3D CAD (Computer-Aided-Design) software based on IntelliCAD technology. Architects, engineers, interior designers, students, and educators will find CADopia useful in creating, editing, and viewing professional drawings. This downloadable version includes a comprehensive suite of drafting features including boundary hatch, dimensioning, fly over snapping, complex linetype support, polyline and spline creation, 3D view creation, and printing and plotting support. It also supports AutoLisp for customization of the product. Improvements in CADopia Standard 6 SP3 include updated ACIS solid model visualization, improved stability and performance, and improved support for multi-line texts.

eDrawings is a free software that lets you view and print eDrawings (eDRW, ePRT, eASM), DXF, and DWG format files.
eDrawings is a freeware utility which will give the user the power to view, create and share 3D models and 2D drawings.
Collaborate more effectively with everyone involved in product development by using eDrawings software, the first email-enabled communication tool that dramatically eases sharing of product design information. Fast, reliable, and convenient, eDrawings
files supply accurate representations of 3D models and 2D drawings created with the most widely used CAD systems on the market. eDrawings offers unique capabilities like point-and-click animations that make it easy for anyone with a PC to interpret and understand 2D and 3D design data.
Main features:
- Viewing native documents in the eDrawings Viewer, such as SolidWorks (*.sldprt, *.sldasm, and *.slddrw) and AutoCAD (*.dxf and *.dwg) documents.
- Creating eDrawings files from your CAD application
- Support for Windows and Macintosh operating systems
- Viewing COSMOSWorks and COSMOSXpress analysis data
- Viewing MoldflowXpress data
- Using eDrawings as a standalone viewer or as an embedded ActiveX control
- Shading views
- Viewing and customizing animations
- Linking drawing views
- Hide Others/Show All
- Make Transparent
- Exporting files as STL, BMP, JPEG, or TIFF files

CAD Viewer 1.0 is created in order to view 2D and 3D. Rotate X axis, Y axis, Z axis. Export CAD file to JPEG. Print out to normal printer and ploter. Autocad 2009, DXF, HPGL, HPGL2, SVG, CGM file formats.

CAD.OCX 1 is designed to draw and perform mathematical calculations for AutoCAD. CAD.OCX is an ActiveX Control written in Visual Basic 6.0 for doing things in AutoCAD like drawing lines, circles, arcs, rectangles, 3D spheres, and 3D cones.

The program can also calculate the length or midpoint of a line, calculate the midpoint of an arc, convert radians to degrees and vice versa, send characters to the AutoCAD command prompt, add single and multiple lines of text to a drawing, add a new layer, calculate the slope and angle of a line, and switch to model and paper space.