It's good easy to learn to use for MEP Drawings Brics CAD can use Cad & BIM extension file DWG # Philemon _Dubai
AutoCAD LT - AutoCAD LT is a drafting tool to create 2D drawings.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
MicroSurvey Software - MicroSurvey CAD is a full-featured CAD package that lets you do everything from creating point clouds to designing complex survey networks.
SketchUp - 3D for Everyone
ARES Commander - Experience the agility of ARES Commander, the n°1 alternative for 2D and 3D DWG-editing for Windows, macOS and Linux computers.
FreeCAD - An open-source parametric 3D modeler