Autodesk Revit Alternatives

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.

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.

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

CorelCAD is a commercial CAD software that allow designers to create 3D and 2D designs and technical documentation, which replaces manual drafting with an automated process. CorelCAD provides one of the fastest, smoothest and most precise experience of CAD software on the market today. One of the most interesting features of this software includes the ability to vectorize an image, which makes the software as powerful for 2D designs as it for 3D designs. The software also supports industry-standard file compatibility with .DWG, .STL, .PDF, and .CDR* and allow for time-saving collaboration and project sharing CorelCAD is built for both Windows and Mac OS, and is released on a subscription-based model. The software will always stay up-to-date for latest platforms, devices, and technologies and you can save and output of your work as long as your subscription is active.