Autodesk AutoCAD is recommended for architects, engineers, drafters, designers, and professionals in the construction and manufacturing industries. It is particularly suited for those who need precise and detailed technical drawings and have a requirement for compatibility with various file types and systems.
AutoCAD MEP - AutoCAD MEP software helps you draft, design, and document building systems.
FreeCAD - An open-source parametric 3D modeler
AutoCAD Plant 3D - AutoCAD Plant 3D is a BIM software that lets you create, modify, and manage schematic piping and instrumentation diagrams.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
DataCAD - DataCAD is a computer-aided design and drafting software for 2D and 3D architectural design and drafting
SketchUp - 3D for Everyone