Free Download ZWCAD Professional for Windows. This professional software application provides handy tools for helping users design 2D and 3D drawings.
Overview of ZWCAD Professional

Although it comes packed with many dedicated parameters, it boasts a clean layout that gives users the possibility to create a new drawing from scratch and use a step-by-step approach which comes in handy, especially for rookies as they are offered assistance throughout the entire process, or choose one of the template files.

The application enables you to select between imperial or metric units, zoom in or out of the working environment, specify angle values, set up drawing limits, use polar tracking mode for restricting the mouse cursor to specified angles, work with line types and layers, and assign colors to objects.

Moreover, you can extract or calculate geometric information from objects (area and circumference calculation), divide objects (lines, arcs, circles) into several equal segments, and specify the 2D and 3D coordinate values.
Features of ZWCAD Professional

    Open or save DWG/DXF drawings from ACAD.
    Import DGN files and exchange drawings with MicroStation.
    Add annotation with voice record
    Trigger commands by mouse gesture
    Multi-filter for selection, select objects that match specific properties
    Convert text information as a barcode or QR code and embed it in the drawing
    Multi-line text, full-text editing functions
    Insert raster images, support formats like JPEG, PNG, and BMP
    Collect geometry together into one object, which you can use repeatedly
    Check and debug codes for correct lisp programs
    Compare two similar drawings and highlight the differences
    Perform calculations within CAD just as you would with a desktop calculator
    Create and modify 3D models with solid, surface, and mesh modeling tools
    Assign how things print, such as color, line weight, line type, etc
    Output DWG drawings to other formats for sharing