Free dwg cad 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

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.

DwgSee Plus 1.2 is created to provide thumbnail preview of DWG files. Browse, rotate, and layer-control display DWG diagrams. Convert between different versions of DWG diagram, for example, AutoCAD R12-2006 DWG to DWF/SVG. It also has simple print function and Office 2007 style interface.

Enhancements: Includes graphics file copy, paste, shear, and delete operations.

DoubleCAD XT 1.1 provides you a convenient AutoCAD LT work-alike. DoubleCAD XT is the CAD of choice for Google SketchUp users and a great companion to AutoCAD.

Major Features:

1. Self-healing, ADT-compatible walls;
2. Self-aligning blocks;
3. Transparent fills;
4. Draw order by layer;
5. Bezier curves;
6. Flatten 3D to 2D views;
7. Hatch pattern editor;
8. Advanced polyline editing;
9. Automatic scaling of units between drawings;
10. Parametric variable palette;
11. Embed/bind image files in drawing;
12. Input multiple unit types on-the-fly;
13. Snap prioritization;
14. Brush editor;
15. Smart dimensions;
16. Import xrefs.
17. With high-level .DWG and .DWF support, exchanging drawings with AutoCAD or AutoCAD LT is simple and straightforward.
18. DoubleCAD XT also has superior .
19. SKP compatibility with Google SketchUp, importing all visible geometry, layers, and components, converting all components to DoubleCAD blocks to optimize drawing performance,
20. Create a paper space from each SketchUp scene,
21. Save time by automatically creating viewports with the correct layer visibility and 2D or perspective view properties.
22. Please use Serial Number: CE80-5049-8000-6244.

Requirements: Windows