Free CAD Software for Windows XP

SINGLE is a control program for four circle diffractometers equipped with point detectors. It is especially optimized for precise determination of lattice parameters from single crystals, but will perform intensity data collections and other types of...

gCAD3D has its own import and export-programs (Step, Iges, VRML, DXF, SVG ..).It integrated 3D-OpenGL viewer and program interpreter for geometry and NC commands in 3D,integrated NC processor.It has programming interface for userprograms...

BeamConstruct is an integrated laser marking software solution for nearly all kinds of laser scanner applications. It offers more than only the common features, supports several laser scanner controllers and provides full support for industrial usage....

xCheck is a tool that can analyze a printed circuit board (PCB) design created with the ExpressPCB program and the associated schematic, drawn using ExpressSCH, looking for problems that should be fixed before manufacturing the board. The schematic is...

QC is ECAD software, DWG compatible, specifically built for the creation and modification of electrical designs, that eliminates repetitive, unproductive and manual tasks, generally associated with generic CAD software. QC Pro provides a higher level of...

Diagram Ring is an award-winning advanced diagram editor. It supports lots of diagram types like Flowcharts, Class Diagrams, DFDs, ERDs, Pie charts, Bar charts. It has more than 45 predefined symbols and more than 15 predefined styles which really help...

Free from practical constraints on board size, pin counts, layers and output types, DesignSpark PCB circuit design software can be used for schematic capture, PCB design, layout and generating manufacturing files. Multi-page schematic designs are...

ZWCAD is a cost-effective, DWG file format compatible CAD solution for the AEC and MCAD industries. With basic drafting functionalities such as creating and editing 2D geometric objects, dimensioning, 3D solid modeling, plotting and file sharing, ZWCAD...

CityCAD Viewer is a free tool for opening and exploring URB-format city models created with CityCAD. It was made available so that CityCAD users can easily share their city models with others. In the Viewer, it is not possible to draw or edit blocks,...

Free 2D Sketching for Designers. Explore ideas, smooth out rough edges, evolve concepts. Creo Sketch is like an electronic version of a napkin or notebook--without the coffee stains. Creo Sketch gives users the ability to quickly draw and communicate...