AutoDesk AutoCAD 2015 x64 & x86 for Windows

AutoCAD 2015 introduces a new version of the .dwg file format and a “shape engine” (geometry core) shared with Revit and Inventor. The interface is more or less the same, with a little bit of enhancement, the most obvious changes would be the background colour of the template from black

Autodesk AutoCAD 2021 x64 for Windows

AutoCAD® is computer-aided design (CAD) software that architects, engineers, and construction professionals rely on to create precise 2D and 3D drawings. Draft, annotate, and design 2D geometry and 3D models with solids, surfaces, and mesh objectsAutomate tasks such as comparing drawings, adding blocks, creating schedules, and moreCustomize with add-on apps and APIs Download