CorelCAD Alternatives for Windows

A free 3D CAD software developed for macOS, Linux and Windows. With OpenSCAD you can create solid 3D CAD objects through a script-only based modeller that uses its own description language. All objects in OpenSCAD can be viewed and inspected but not interactively selected or modified with gestures or mouse. Everything in OpenSCAD is based on scripts, a feature that some love. The software is openly developed and released under the GNU General Public License.

BricsCAD is a commercial CAD software for 2D and 3D modeling supporting industry-specific apps.

With ArchiCAD you can work smarter, not harder.  It's a CAD software that allow you to design and deliver projects of any size utilizing a suite of built-in tools and user-friendly interface that make it the most efficient and intuitive BIM software on the market.  Featuring out-of-the-box design documentation, one-click publishing, photo-realistic rendering, and best-in-class analysis. Archicad lets you focus on what you do best: design great buildings.

FreeCAD is a highly customizable, scriptable and extensible computer aided design software software for the, MacOS, Linux and Windows operating systems. With FreeCad you can model and design real-life objects in 3D through parametric modeling where all 3D objects you design are controlled by parameters. FreeCAD is released as free and open source software under LGPv2+ license, and can be used for commercial and hobby projects alike.

SketchUp is a 3D modeling and design software used for architectural, interior design, landscape architecture, mechanical engineering, film and video game design. The software is simple to learn yet robust enough to empower creators to manifest their ideas. SketchUp is provided as a free software and released alongside SketchUp Pro, the premium version of the software.

Onshape is the only Software-as-a-Service (SaaS) product development platform that combines CAD, built-in data management, real-time collaboration tools, and business analytics.