It's good easy to learn to use for MEP Drawings Brics CAD can use Cad & BIM extension file DWG # Philemon _Dubai
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
SketchUp - 3D for Everyone
Invision - Prototyping and collaboration for design teams
FreeCAD - An open-source parametric 3D modeler
Sketch - Professional digital design for Mac.